Question: What am I missing? I don't see an answer M X 3 3 = 1 0 1. Let A be an m x 3 matrix

What am I missing? I don't see an answer

M X 3 3 = 1 0 1. Let A be an m x 3 matrix and let B = 1 1 1 . Then the first column of the matrix 01 1 AB is -AA rab 27 A. The same as the second column of B def B. The same as the first column of A Lghi C. The same as the second column of A O D. The sum of the first and second columns of A E. The sum of the first and third columns of A [a+bto] [ a+ bic] [ b+c] F. The sum of the second and third columns of A V or at6 atbic b+c

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