6. Use the following matrices to answer the questions. (2 points each)
 5 -8
 2 -6
 -8
 -2 3
 A
 외
 B =
 [4
 18] c- [5 5] -
 C=
 9 1
 03
 9
 1
 a. Is the operation E + C possible? Circle YES or NO
 If yes, state the dimensions of the answer:
 b. Is the operation B + C possible? Circle YES or NO
 If yes, state the dimensions of the answer:
 c. Is the operation E. D possible? Circle YES or NO
 If yes, state the dimensions of the answer:
 d. Is the operation D E possible? Circle YES or NO
 If yes, state the dimensions of the answer:
 e. Is the operation A D possible? Circle YES or NO
 If yes, state the dimensions of the answer:
 1
 -1 10
 E
 11
 7 -1 0