72. The risk-free rate is 5 percent. The expected market rate of return is 11 percent. If you expect stock X with a beta of 2.1 to offer a rate of return of 15 percent, you should A. buy stock X because it is overpriced. B. sell short stock X because it is overpriced. C. sell stock short X because it is underpriced. D. buy stock X because it is underpriced. E. none of the above, as the stock is fairly priced.