My mother regretted not having planted a garden this year. She felt bad

A. If my mother had planted a garden this year, she wouldn’t have had to buy her vegetables from the supermarket. 

B. When she realized that the vegetables at the supermarket were so bad, my mother decided to grow her own from then on. 

C. Feeling sorry that she hadn’t planted a garden this year, my mother did not feel good about purchasing vegetables from the supermarket.

D. The garden that my mother had not planted, which she regretted not doing, would have produced better vegetables than the ones she got at the supermarket.