What are the dietary sources and functions of vitamin C?

• A. Vitamin C is a fat-soluble vitamin primarily stored in the liver.
• B. Vitamin C functions as a hormone and does not affect collagen synthesis.
• C. Citrus fruits, berries, and peppers are rich sources of vitamin C; it acts as an antioxidant, supports collagen synthesis, and aids iron absorption.
• D. Vitamin C deficiency causes goiter.

Answer: (C)