A Security's Return in Equal to Its Systematic Return Plus

A security's return in equal to its systematic return plus its unsystematic return where ________.

A) the security return, R, may be expressed as R = βRm + ε'.
B) the systematic return is proportional to the market return and it can be expressed as the symbol beta (or β) times the market return, Rm.
C) unsystematic return, which is independent of market returns, is usually represented by the symbol epsilon (ε') .
D) All of these