One Difference Between Over-Reaching and Overtraining Is That ______

One difference between over-reaching and overtraining is that ______.

A) Over-reaching is a syndrome commonly seen in athletes involving prolonged periods of fatigue whereas overtraining is a temporary condition of mental stress that may impair performance.
B) Overtraining may be a planned phase of high-intensity exercise common to elite athletes whereas over-reaching involves a similar phase in novice athletes.
C) Over-reaching involves poor nutrition and high-intensity exercise whereas overtraining only involves high-intensity exercise and normal nutritional practices.
D) Overtraining involves a syndrome of prolonged fatigue in athletes whereas over-reaching may be planned, short-term training phase of high-intensity exercise followed by short-term recovery.