4&6 please

You recently purchased a stock that is expected to cam 12 percent in a booming cconomy, 8 percent in a normal economy and loses percent recessionary economy. There is a 15 percent probability of a boom, a 75 percent chance of a normal economy, and a 10 percent chance of a recession. What is your expected rate of return on this stock? A 5.00 percent OB. 6.45 percent OC. 7.30 percent D.7.65 percent O E 8.30 percent You have a portfolio consisting solely of stock A and stock B. The portfolio has an expected return of 10.2 percent. Stock A has an expected return of 12 percent while stock B is expected to retum 7 percent. What is the portfolio weight of stock A? 46 percent OB 54 percent OC.58 percent OD 64 percent E 70 percent