(20 1 1? "B" in the picture represents the seed of peach, and "B" is pistil () A, style B, ovary wall C and ovule.
After pollination and fertilization in a flower, only the ovary continues to develop. The development of ovary is as follows:
As can be seen from the figure, the ovary wall develops into pericarp, and the ovule develops into seed. The "b" in the ovary development fruit diagram represents the seed of peach, which develops from ovule.
So choose: C.