Nutrition for Health, Fitness & Sport 10th Edition by Melvin Williams ,Dawn Anderson,Eric Rawson

تمرين 4

The task of acquiring enough vitamin B 12 may pose a problem to vegans who do not eat fortified foods because:
A) fibers in vegetables inhibit its absorption
B) vegans lack the intrinsic factor
C) B 12 is found only in animal products
D) a deficiency may occur from excess intake of soy products
E) folacin retards its absorption