Question 9 (2 points) What is the beta of a portfolio comprised of the following securities? Stock Security Beta A B. C Amount Invested $6,800 $4,500 $7.700 -1.40 1.95 0.80 OA) 0.8942 B) 0.2850 C) 0.6882 D) 1.2871 E) 1.2318