In the Equation R = E(R)+ U,the Three Symbols,from Left

Multiple Choice

In the equation R = E(R) + U,the three symbols,from left to right,stand for:

A) average return,expected return,and unexpected return.
B) required return,expected return,and unbiased return.
C) actual return,expected return,and unexpected return.
D) required return,expected return,and unbiased risk.
E) required return,expected return,and unsystematic risk.