What is the BEST explanation of why a patient who experiences a syncopal episode regains consciousness after falling?

A. The supine position allows more blood to perfuse the brain.
B. The act of falling causes the heart rate to decrease.
C. The trauma of falling causes the blood glucose level to increase.
D. The seizure stops once the patient is supine.

Answer: A. The supine position allows more blood to perfuse the brain.