What Are the Two Primary Principles Endurance Athletes Should Follow

What are the two primary principles endurance athletes should follow to avoid extreme fatigue and optimize performance? Select all that apply.

A) Optimize liver and muscle glycogen stores.
B) Enhance efficiency with which protein and carbohydrates are converted to fuel.
C) Enhance efficiency with which glucose and fatty acids are converted to fuel.
D) Maximize hydration status.
E) Optimize free-floating blood glucose.