What Is the Effect on Muscle ATP and Creatine Phosphate

What is the effect on muscle ATP and creatine phosphate (CrP) when an athlete performs very-high-intensity exercise for a very short period of time (e.g., 10 seconds) ?

A) ATP and CrP both decline rapidly and in concert with each other.
B) Neither ATP nor CrP decline much because of the very short duration of exercise.
C) CrP declines rapidly but there is virtually no decline in ATP.
D) ATP declines then plateaus while CrP declines substantially.