Rework problem 7 from section 6.1 of your text, involving matrices A, B, and C. Use the following matrices instead of those listed in your text. 7 4 7 -3 B = -3 4 С - 8 -1 5 -8 A = -4 7 4 -4 -6 5 -8 -5 -1 (1) Indicate (i.e. check) the operations below which are defined. OA. C+A ОВ. АВ OC. (B + C)A OD. CA OE. A + B OF. A(B + C)

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