Matt is a vegan. As a result of his diet, he consumes no sources of preformed vitamin A. Which of the following statements explains why he has not developed a deficiency of vitamin A?
A. Matt's diet supplies high amounts of beta-carotene.
B. Matt drinks red wine, which is a rich source of preformed vitamin A.
C. Matt eats plenty of eggs, which are rich sources of retinol.
D. Matt's diet is rich in vitamin C, which reduces his need for vitamin A.
Answer: A
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Fill in the blank(s) with correct word