Some types of vitamin A are immediately usable by the body, while other types need to be converted first. Read the statements below and select the correct statements regarding retinol.


a. Retinol is the most usable form of preformed vitamin A.

b. All carotenoids from plant foods are easily converted to vitamin A.

c. Preformed vitamin A is only found in animal food sources, foods that are fortified, or supplements.

d. Retinol needs to be converted to retinal before it can be utilized by the body.