Suppose that an investor chooses according to mean-standard deviation criterion. The investor is faced with the following 4 investment choices:

Expected Return Standard Deviation

Portfolio P 10% 5%

Portfolio Q 21% 11%

Portfolio R 18% 23%

Portfolio S 24% 16%

Which of the statements below is correct?

A) Investor chooses Q over P

B) Investor chooses Q over R

C) Investor chooses S over all of the others

D Investor chooses S over Q

E) Investor chooses R over P