A person has a diet very rich in Vitamin A (from vegetables) but blood tests indicate the person is low in this vitamin. Which of the following is a possible explanation for this?
1) The person has a medical condition that prevents proper absorption of Vitamin A
2) The person is not consuming enough Vitamin A-rich foods
3) The person is not properly storing Vitamin A in their body
4) The person is not getting enough sunlight to convert Vitamin A precursors into active Vitamin A