关于生物的生殖和发育，下列说法正确的是[ ]

A．经过复制后的同源染色体一定能够形成四分体

B．酵母菌进行出芽生殖时，导致子代个体之间差异的可能原因是基因突变、基因重组和染色体变异

C．利用稻种出芽长成秧苗来繁殖水稻的生殖方式属于无性生殖

D．蚕豆种子中和卵生动物受精卵中卵黄的功能相似的结构是由顶细胞发育而来

The doctor came up and asked me _____the day before.

A．what I had eaten

B．what had I eaten

C．that what I had eaten

D．that what had I eaten