What is the product of 6x – y and 2x – y + 2? A=8x2 – 4xy + 12x + y2 – 2y B=12x2 – 8xy + 12x + y2 – 2y C=8x2 + 4xy + 4x + y2 – 2y D=12x2 + 8xy + 4x + y2 + 2y