Vegetarians Are at Risk of Developing a Vitamin B₁₂ Deficiency

Multiple Choice

Vegetarians are at risk of developing a vitamin B₁₂ deficiency because:

A) their bodies cannot absorb the vitamin.
B) their diet causes increased excretion of the vitamin.
C) only animal foods contain sufficient amounts of the vitamin.
D) their diet increases the rate of use of the vitamin by their bodies.