You observe the following information regarding companies x and y: ∙ company x has a higher expected return than company y.∙ company x has a lower standard deviation of returns than company y.∙ company x has a higher beta than company y. given this information, which of the following statements is correct? a. company x has a lower coefficient of variation than company y. b. company x has less market risk than company y. c. company x's returns will be negative when y's returns are positive. d. company x's stock is a better buy than company y's stock. e. company x has more diversifiable risk than company y.