Consider the following investments.

Expected return Standard deviation

Portfolio A: 10% 5%

Portfolio B: 14% 4%

Portfolio C: 17% 8%

Required: 

(1). If L R (the level of return which your portfolio would not be below) equals 5%, which is your preferred portfolio for your investment according to Roy’s safety-first criterion? Assume returns are continuously distributed

(2). If the Kataoka α probability equals 5%, which is your preferred portfolio for your investment according to Kataoka’s safety-first criterion?