Use the Following Information to Answer Following Questions

Use the following information to answer Following Questions . A 50-year-old man has a body weight of 110 kg, resting heart rate of 90 beats/min, arterial pressure of 120/70 mm Hg, arterial hematocrit of 35% and a normal body temperature. His pressure-volume diagram of the left ventricle is shown below.
-What is his ventricular ejection fraction?

A) 33%
B) 50%
C) 60%
D) 67%
E) 80%