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. 10004200361200222532 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. A. Replace row 4 by its sum with times row 3 . (Type an integer or a simplified fraction.) B. Interchange row 3 and row 2. c. Scale row 1 by (Type an integer or a simplified fraction.) D. Replace row 2 by its sum with times row 4 . (Type an integer or a simplified fraction.)