With Regard to Serum Cholesterol Levels and Risk of Heart

Multiple Choice

With regard to serum cholesterol levels and risk of heart disease among middle-aged people,research suggests that

A) cholesterol level may not be a risk factor.
B) the ratio of total cholesterol to HDL may be more important than total cholesterol.
C) low-density lipoprotein may protect against heart disease.
D) a high ratio of total cholesterol to HDL is desirable.