Which of the Following Describes the Effect of Vitamin a in Foods

Which of the following describes the effect of vitamin A in foods? 

A)  Fast-food French fries are good sources of vitamin A. 
B)  Arctic explorers who have eaten large quantities of polar bear liver have become ill with symptoms suggesting vitamin A toxicity. 
C)  To date, scientists have been unable to solve the problem of vitamin A deficiencies in developing countries. 
D)  Chlorophyll in vegetables can be converted to active vitamin A in the intestinal cells. 
E)  Pregnant women should eat at least one ounce of beef liver per day to help ensure normal fetal eye development.