If stock markets are in equilibrium, which of the following conditions will exist?

a) Each stock's expected return should equal its realised return as seen by the marginal investor.

b) Stocks with the same beta should have the same realised return during the coming year.

c) The stock's market price must equal its intrinsic value as seen by the marginal investor.

d) All stocks should have the same expected return as seen by the marginal investor.

e) None of the statements are correct.