Which one of the expressions below is the simplest form of#frac{6(x+2y)+3x}{2(x+2y)-2y}#A. #frac{9x+12y}{2x+2y}#B.#frac{6x+6y}{x}#C.#frac{3+3x}{1-2y}#D.#frac{9x+2y}{2x}#