The sizes of two matrices A and B are given. Find the sizes of the product AB and the product BA, whenever these products exist.A is 4 × 4, and B is 4 × 4.
A. 4 × 4; 4 × 4
B. 8 × 4; 8 × 4
C. 4 × 8; 4 × 8
D. 1 × 1; 1 × 1
Answer: A
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