1 8 6 8 Find the following matrices where A = and B = 2 6 5 4 a. A + B b. A - B C. - 5A d. 2A + 4B 1.... 7 16 O A. A+B= (Simplify your answer.) 7 10 O B. This matrix operation is not possible. b. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. -5 0 O A. A -B= (Simplify your answer.) - 3 O B. This matrix operation is not possible. c. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. - 5A= (Simplify your answer.) O B. This matrix operation is not possible. d. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. 2A +4B = (Simplify your answer.) O B. This matrix operation is not possible