Which one of these will produce an acceptable estimate of the value of the market risk premium?

A.	Historical rate of return on a market index

B.	Average rate of return on the S&P 500 plus the risk-free rate

C.	Dividend yield of the S&P 500 + Consensus forecast of future dividend growth - U.S. Treasury bill rate

D.	Total dividends paid by the S&P 500 firms for a 1-year period divided by the U.S. Treasury bill rate

E.	Rate computed using the CAPM and a beta of 1