Which of the Following Is Not a Reason That Capillaries

Which of the following is not a reason that capillaries are highly branched?

A) Branching creates very narrow vessels that only allow one blood cell through at a time. Forcing blood cells into single-file lines ensures that they do not form clots.
B) The many branches of capillaries allow the circulatory system to spread out so that no cell in the body is out of range of rapid diffusion from the blood.
C) Branching slows down the flow of blood by increasing frictional drag. Slower blood flow allows more time for the exchange of gases and nutrients.
D) Branching increases the surface area of the capillaries creating more surface area over which gas and nutrient exchange can occur.