The sizes of two matrices are given. Find the size of the product AB and the size of the product BA, if the given product can be calculated.A is 2 × 4; B is 4 × 2.

A. AB is 2 × 2; BA cannot be calculated.
B. AB cannot be calculated; BA is 4 × 4.
C. AB is 4 × 4; BA is 2 × 2.
D. AB is 2 × 2; BA is 4 × 4.

Answer: D

Mathematics

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