Question 13 (1 point) E (Listen b l What are the shapes, in respective order, of a risk-neutral, risk-loving, and risk-averse investors' utility functions? If f) Convex, concave, straight line If\") Straight line, concave, convex ( f) Concave, convex, straight line If\") Straight line, convex, concave (f j. Concave, straight line, convex Question 14 (1 point) E 4:) Listen b l The Risk Metrics model for volatility is superior to simply using squared returns because (). Risk Metrics is easier to compute Risk metrics allows for time varying volatility, whereas using squared returns '1 doesn't (if) Risk Metrics is less noisy than squared returns (f \"j. a and c Question 15 (1 point) E quisten > ( Which of the following is true regarding volatility? (f Return volatility is not directly observed Time varying volatility can account for some excess kurtosis found in stock returns Time varying volatility depends on the assumptions that returns follow a non- stationary distribution a, b, and C b and C