Eskimos wear a great deal of clothing and have limited exposure to ultraviolet light, but do not suffer from vitamin D deficiency. A possible explanation is
A. they do not require sunlight for vitamin D formation.
B. their bodies produce vitamin D another way.
C. they do not need vitamin D.
D. their exposure to ultraviolet light in the summer will last for a year.
E. they get enough vitamin D in their diet of fish and marine mammals.
Answer: E
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