The patient is eager to begin his exercise program with a 3.2-km (2-mile) jog.The nurse instructs the patient to warm up with stretching exercises.The patient states that he is ready and does not want to waste time with a "warm-up." What does the nurse explain about the warm-up?

A) It allows the body to readjust gradually to baseline functioning.
B) It prepares the body and decreases the potential for injury.
C) It should not involve stretching exercises because they can lead to injury.
D) It should be performed with high intensity to prepare for the coming challenge.