As investors become more pessimistic (risk averse): Select one: a. they invest in a portfolio with a high beta. b. prices of securities fall in order to raise their expected rate of return. c. they require larger betas for taking risk. d. they require smaller premiums for taking risk.

As investors become more pessimistic (risk averse): Select one: a. they invest in a portfolio with a high beta. b. prices of securities fall in order to raise their expected rate of return. c. they require larger betas for taking risk. d. they require smaller premiums for taking risk