Arisky fund has an expected return of 9% and standard deviation of 15%. The T-Bill rate is 3%. An investor allocates 125% of her retirement portfolio to the risky fund and -25% to T-Bills (recall the negative allocation to T-Bills indicates borrowing at risk free rate). What is the investor's risk aversion coefficient (A)? 0.47 2.13 -2.13 1.40