You Just Ate a Huge,delicious Breakfast and Now Are Going

Multiple Choice

You just ate a huge,delicious breakfast and now are going to head out for your morning run.As you try picking up the pace,you find running to be quite difficult because

A) blood flow to the abdominal organs is dominant.
B) stroke volume is decreased.
C) everywhere in the systemic circuit,blood vessels are constricted.
D) your heart rate is too high.
E) your mean arterial pressure is too high.