You need to solve a system of equations. You decide to use the elimination method. Which of these is not allowed? 3x-2y=7 3x+4y=17 Equation 1 Equation 2 A. Subtract equation 2 from equation 1. O B. Multiply equation 1 by 2. Then add the new equation to equation 2. OC. Subtract the left side of equation 2 from the left side of equation 1.