Elevated HDL (High-Density Lipoprotein)levels Seem to Provide Positive Cardiovascular Health

Elevated HDL (high-density lipoprotein) levels seem to provide positive cardiovascular health effects,even for individuals with abnormally high blood cholesterol.What best describes the beneficial action of HDL?

A) HDL lines the blood vessel walls, preventing the attachment of cholesterol and the consequential inflammation that follows.
B) HDL is an anti-inflammatory agent; it suppresses the inflammatory response in blood vessel walls following the entry of cholesterol.
C) HDL has cardiostimulatory effects; it elevates heart rate and blood pressure in a fashion similar to exercise.
D) HDL collects surplus cholesterol from peripheral tissues and transports it to the liver, reproductive, and adrenal glands where it is converted to bile or hormones.