Which is the best way to use historical data to estimate the expected return for investing in the stock market? A. An average of a few years of recent stock market returns B. The current Treasury bill rate plus a long run average risk premium for investing in the stock market. C. A long-run average Treasury bill rate plus a long-run average risk premium for stock market investing. D. The current Treasury bill rate plus an average risk premium for stock market investing in recent years. E. A long-run average of historical stock market returns