Consider the accompanying matrix as the augmented matrix of a linear system. State in words the next two elementary row operations that should be performed in the process of solving the system What should be the first elementary row operation performed? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. Interchange row 3 and row 2 ✔B. Replace row 4 by its sum with -4 times row 3. fraction) (Type an integer or a simplified OC Replace row 2 by its sum with times row 4. (Type an integer or a simplified fraction) OD. Scale row 1 by (Type an integer or a simplified fraction) What should be the second elementary row operation performed? Select the correct choice below and, if necessary, fill in the answer box to complete your choice OA. Replace row 1 by its sum with times row 4. (Type an integer or a simplified fraction) OB. Scale row 4 by (Type an integer or a simplified fraction.) 1-4 -1 02 4 0014-3 00 4 14

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