
Passage: The scientists hypothesized that a special kind of fat, "P fat", is necessary for the development of eyesight. They observed that babies fed with formula low in P fat had poorer eyesight than those fed with breast milk. The content of P fat in breast milk is high, so they put forward the above hypothesis. In addition, they also found that babies born 5-6 weeks prematurely have poorer eyesight than full-term babies.
Question: Which of the following options, if true, best supports the above scientists' hypothesis?
A. A.The fetus only increases the amount of P fat obtained from the mother in the last four weeks of pregnancy.
B. B.Adults who lack P fat in their diet have poorer eyesight than those with high P fat content in their diet.
C. C.The vision of the fetus develops during the last 3 months of pregnancy.
D. D.The mother's poor eyesight does not lead to the baby's poor eyesight.
Answer: