Mathematics, 10.03.2020 05:58 claaay1

Determine whether each statement is true or false. If a statement is true, give a reason or cite an appropriate statement from the text. If a statement is false, provide an example that shows the statement is not true in all cases or cite an appropriate statement from the text.

(1A) If A is an m ✕ n matrix and B is an n ✕ r matrix, then the product AB is an ✕ r matrix.

A. True, the number of elements in a column of the first matrix must be equal to the number of elements in a row of the second matrix.
B. False, the number of elements in a row of the first matrix must be equal to the number of elements in a column of the second matrix.
C. False, the number of elements in a column of the first matrix must be equal to the number of elements in a row of the second matrix.
D. True, the number of elements in a row of the first matrix must be equal to the number of elements in a column of the second matrix.

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