The size of two matrices is given. Find the size of the product AB and the product BA, if the products exist.A is 2 × 4, B is 4 × 2.
A. AB is undefined, BA is 4 × 4.
B. AB is 4 × 4, BA is 2 × 2.
C. AB is 2 × 2, BA is undefined.
D. AB is 2 × 2, BA is 4 × 4.
Answer: D
Mathematics
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