The sizes of two matrices A and B are given. Find the sizes of the product AB and the product BA, if the products are defined.A is 4 × 4, B is 4 × 4.
A. AB is 1 × 1, BA is 1 × 1.
B. AB is 4 × 4, BA is 4 × 4.
C. AB is 4 × 8, BA is 4 × 8.
D. AB is 8 × 4, BA is 8 × 4.
Answer: B
Mathematics
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