3. There are three economy situations and two stocks. Information is as follows. Assume you have $10,000 and allocate $4,000 on stock A. (Answer format: keep 1 digit after decimal point in \%. For example, 1.56\% -> 1.6\%) a. What are the expected returns for both stock A and B respectively? b. What is the standard deviation/ risk for stock A ? c. What is the expected portfolio? d. What is the portfolio return when economy is booming