Integrate the following expression: (9)/((1-x²)^((3)/(2))). Which of the following options represents the correct integral? A) ∫ (9)/((1-x²)^((3)/(2))) dx B) ∫ (9)/((1-x²)^((3)/(2))) d(x) C) ∫ (9)/((1-x²)^((3)/(2))) d(x) D) ∫ (9)/((1-x²)^((3)/(2))) dx