Identify the elementary row operation(s) being performed to obtain the new row-equivalent matrix. (Select all that apply.) New Row-Equivalent Matrix -1 -2 1 -2 0-10 4 -8 0 -2 -3 -4 Original Matrix -1 -2 1-2 2-6 2-4 4 6 -7 4 O Multiply Row 2 by two. Add 4 times Row 1 to Row 3. Multiply Row 2 by four. Add 2 times Row 1 to Row 2. O Add 4 times Row 1 to Row 2.

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