Which operation would make the first element in row 2 equal 0?
A
Add row 1 and row 2 and insert the result in row 2.B
Add row 1 and row 2 and insert the result in row 1.C
Subtract row 1 and row 2 and insert the result in row 2.D
Subtract row 1 and row 2 and insert the result in row 1.