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.
Select all that apply.
1- Retinol is the most usable form of preformed vitamin A.
2- All carotenoids from plant foods are easily converted to vitamin A.
3- Preformed vitamin A is only found in animal food sources, foods that are fortified, or supplements.
4- Retinol needs to be converted to retinal before it can be utilized by the body.