2. Let A = 1 ). Consider the following elementary matrices, Ej =( (10) (21) com lo-7) 14 /10 101 Loi ), E3 = 1 and E4 =( (10) Which one of the following is true? A) A = EE3E2E4 B) A = EE2E3 C) A = E3E, E2 D) A = E4E3E2E E) None of the above.

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2. Let A = 1 ). Consider the following elementary matrices, Ej =( (10) (21) com lo-7) 14 /10 101 Loi ), E3 = 1 and E4 =( (10) Which one of the following is true? A) A = EE3E2E4 B) A = EE2E3 C) A = E3E, E2 D) A = E4E3E2E E) None of the above.

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