Jane is a 25-year-old endurance athlete. She consumes a strict vegetarian diet and does not take supplements. Which of the following supplements should Jane be taking for optimal running performance?
a. iron and folic acid
b. iron and beta-carotene
c. iron and cobalamin (B12)
d. iron and riboflavin
e. zinc and calcium
Answer: c. iron and cobalamin (B12)