Which of the Following Best Represents Current Knowledge of the Role

Which of the following best represents current knowledge of the role of vitamin and mineral supplements in physical performance?

A) When taken right before an event, vitamin and mineral supplements benefit performance.
B) Moderate amounts of vitamins and mineral supplements improve the performance of most elite athletes.
C) Except perhaps for iron, vitamin and mineral supplements are needed in high amounts to meet the needs of athletes exposed to hot and humid weather conditions.
D) Except perhaps for iron, vitamin and mineral supplements are not recommended.