Which of the Following Gives the Best Definition of the CAPM

Multiple Choice

Which of the following gives the best definition of the CAPM approach?

A) Unsystematic risk, as measured by beta, is the only factor affecting the level of return required on a share for a completely diversified investor.
B) Systematic risk, as measured by beta, is the only factor affecting the level of return required on a share for a completely diversified investor.
C) Unsystematic risk, as measured by beta, is one of the key factors affecting the level of return required on a share for a completely diversified investor.
D) Systematic risk, as measured by beta, is one of the key factors affecting the level of return required on a share for a completely diversified investor.