A: 6x - 3y = - 4 B: -4x - y = 5 To solve this system of equations by elimination, what could you multiply each equation by to cancel out the y-variable? A) Multiply A by 2 and B by 3) B) multiply a by 1 and b by -3) C) multiply a by 3 and b by 2) D) multiply a by 1 and b by -2)