In the Capital Asset Pricing Model (CAPM),the Term Beta,β,is

In the Capital Asset Pricing Model (CAPM) ,the term Beta,β,is

A) a measure of systematic risk inherent in a security.
B) calculated as the "covariance of future returns between a specific security and the market portfolio" divided by the "variance of returns of the market portfolio."
C) a measure of systematic risk inherent in a security; calculated as the "covariance of future returns between a specific security and the market portfolio" divided by the "variance of returns of the market portfolio."
D) none of the options