Your Friend Is Participating in a Strenuous World-Class Competition That

Your friend is participating in a strenuous world-class competition that lasts for over four hours. What advice would you give your friend?

A) Don't worry about electrolyte losses.
B) Consume sports drinks and pretzels.
C) Take electrolyte or salt tablets.
D) Drink plenty of plain water.
E) Drink a fluid that contains sucrose, not fructose.