Which one of the following statements is correct? A$.$ Risk premiums are inversely related to the standard deviation of returns. B$.$ The lower the expected rate of return, the wider the distribution of returns. C$.$ Risks and expected returns are positively related. D$.$ The risk$-$free rate of return has a risk premium of $1\mathrm{.}0.$ E$.$ The reward for bearing risk is called the standard deviation.