Which one of the following choices is the most accurate about fat-soluble vitamins?
a. they can be stored in the body.
b. they provide no risk of vitamin toxicity.
c. they can cause gastric upset, diarrhea, and kidney stones.
d. they can build collagen and aid in healing.

The correct answer to this question is:

A.      They can be stored in the body.

In fact, they can be stored in the body for longer periods of time and may pose risk for toxicity when consumed more than those vitamins which are water-soluble. Fat-soluble vitamins include A, D, E, and K.