Which Statement Provides the Best Rationale for Monitoring HDL and LDL

Which statement provides the best rationale for monitoring HDL and LDL as opposed to total cholesterol?

A) HDL and LDL monitoring is less expensive than measuring total cholesterol.
B) Total cholesterol does not differentiate the amounts of "good" cholesterol and "bad" cholesterol.
C) HDL and LDL measurements are more general and frequently used to assess clients that are not at risk for heart disease.
D) Total cholesterol measurements are often inaccurate and not as reliable as HDL and LDL.