Which of the following statements about estimating the expected market risk premium for CAPM are true?

	A.	The historical approach has an advantage in that it is subjective.
	B.	The forward-looking approach requires estimates of future dividends, which makes using this approach more difficult.
	C.	The forward-looking approach always uses historical data to estimate future dividends.
	D.	The historical approach is straightforward, but not commonly used.