In the context of a well-diversifed portfolio, the expected return on a security depends on which of the following

I. Risk-free rate of return

I. Amount of the security's unique risk

Ill Rate of return on the market portfolio

IV. Standard deviation of returns

O ll,l, and V only

O land ill only

O ll and IN only

O 1. l, ll, and IV

O lll, and V only