Question: If an investor is trying to forecast the future price of a company's common stock and in the process uses only past prices of the company's stock, then the investor A. has rational expectations. B. has reactive expectations. C. is likely to rapidly adjust his forecast to news affecting the future profitability of the company. D. is likely to make forecasts that reflect closely the company's stock's fundamental value. E. has adaptive expectations. F. none of the above