The Figure Below Shows Data for Three Different Characteristics of Blood

The figure below shows data for three different characteristics of blood vessels (orange, blue and green curves, respectively) . What is correct to conclude from this graph?

A) The exchange of nutrients and respiratory gases between the blood and the interstitial fluid occurs where the blue curve plateaus out on the right.
B) Blood is propelled at the maximum of the orange curve by forceful closing of the aortic valve.
C) The orange curve represents the velocity of the blood flowing through each class of blood vessel.
D) The blue curve represents the average blood pressure in each class of blood vessel.
E) The green curve represents the total cross-sectional area of each class of blood vessel.