A loop was not parallized but Vectorized ?

Given the following simple code

!DEC$ ATTRIBUTES FORCEINLINE :: RESET
      elemental subroutine RESET(this )
!DIR$ ATTRIBUTES VECTOR :: RESET
      implicit none

      class(t_sources), intent(inout)        :: this

!---- local
      integer                               :: i

!DIR$ VECTOR ALIGNED
      this% mass_n     = this% mass
!DIR$ VECTOR ALIGNED
      this% mom_n(:,1) = this% mom(:,1)
!DIR$ VECTOR ALIGNED
      this% mom_n(:,2) = this% momentum(:,2) 
!DIR$ VECTOR ALIGNED
      this% mom_n(:,3) = this% mom(:,3)

!---  initialise array
!DIR$ VECTOR ALIGNED
      this% mass      = 0.
!DIR$ VECTOR ALIGNED
      this% mom(:,1) = 0.
!DIR$ VECTOR ALIGNED
      this% mom(:,2) = 0.
!DIR$ VECTOR ALIGNED
      this% mom(:,3) = 0.

I get the following optimisation report (SHOWN for line 16 but the same principle goes for the remaining)

LOOP BEGIN at test.f(16,7)
   remark #25399: memcopy generated
   remark #17104: loop was not parallelized: existence of parallel dependence
   remark #17106: parallel dependence: assumed OUTPUT dependence between this(:,2) (16:7) and this(:,2) (16:7)
   remark #17106: parallel dependence: assumed OUTPUT dependence between this(:,2) (16:7) and this(:,2) (16:7)
   remark #15542: loop was not vectorized: inner loop was already vectorized


   LOOP BEGIN at tes.f(16,7)
      remark #15388: vectorization support: reference this(:,2) has aligned access
      remark #15388: vectorization support: reference this(:,2) has aligned access
      remark #15305: vectorization support: vector length 4
      remark #15300: LOOP WAS VECTORIZED
      remark #15448: unmasked aligned unit stride loads: 1 
      remark #15449: unmasked aligned unit stride stores: 1 
      remark #15475: --- begin vector cost summary ---
      remark #15476: scalar cost: 4 
      remark #15477: vector cost: 0.750 
      remark #15478: estimated potential speedup: 5.330 
      remark #15488: --- end vector cost summary ---
      remark #25015: Estimate of max trip count of loop=3
   LOOP END

Question A) :  How shall I interpret the difference between that the loop was not parallelised but vectorized? - I am compiling with -parallel but that would enable automatic vectorization? Can somebody please explain me the difference between these two reports

Question B) :  As you see I have a the directive `!DIR$ ATTRIBUTES VECTOR :: RESET` - I am  not sure when to use and when not to use it. I now it means that the function becomes vectorized but would that differ from not having the directive but rather having a !omp simd?

Thanks very much in advance