Use the indicated entry as the pivot and perform the pivotin

Use the indicated entry as the pivot and perform the pivoting once. [x_1 x_2 x_3 x_4 x_5 x_6 z 1 2 1 1 0 0 0 10 2 2 3 0 1 0 0 36 4 1 1 0 0 1 0 18 -2 -1 -3 0 0 0 1 0] A. [x_1 x_2 x_3 x_4 x_5 x_6 z 3 -1 0 -1 0 0 0 4 -1 -4 0 -3 1 0 0 6 4 1 1 0 0 1 0 18 0 1 0 0 1 0 1 36] B. [x_1 x_2 x_3 x_4 x_5 x_6 z 1 2 1 1 0 0 0 10 -5 -8 0 -3 1 0 0 6 5 -3 0 -1 0 1 0 8 -1 7 0 -3 0 0 1 30] [x_1 x_2 x_3 x_4 x_5 x_6 z 3 -1 0 -1 0 0 0 4 -10 -1 0 0 1 -3 0 18 4 1 1 0 0 1 0 18 0 1 0 0 1 0 1 36] D. [x_1 x_2 x_3 x_4 x_5 x_6 z 1 2 1 1 0 0 0 10 -1 -4 0 -3 1 0 0 6 3 -1 0 -1 0 1 0 8 1 5 0 3 0 0 1 30]

Solution

Answer is D because we have to make key element as 1 and remaining elements in the key element column as zero