1. Carbocation rearrangements For each carbocation, circle if the carbocation rearranges or doesn't rearrange. If it rearranges, draw the arrow-pushing mechanism and the resulting carbocation. (a) (circle one): rearranges or doesn't rearrange H3C H y (b) (circle one): rearranges or doesn't rearrange F3C H ୪ H (c) (circle one): rearranges or doesn't rearrange H3C CH3 (d) (circle one): rearranges or doesn't rearrange zo H3CO CH3 CH3