Using the derivative of logarithmic function, what is the derivative of y = (x³ sin x) /(x² + 2) ?
a) (3x² sin x + x³ cos x) /(x² + 2) - (2x³ sin x) /(x² + 2) ²
b) (3x² sin x - x³ cos x) /(x² + 2) + (2x³ sin x) /(x² + 2) ²
c) (3x² sin x + x³ cos x) /(x² + 2) + (2x³ sin x) /(x² + 2) ²
d) (3x² sin x - x³ cos x) /(x² + 2) - (2x³ sin x) /(x² + 2) ²