Which of the following options correctly differentiates the function y=(6x^(2)-7)/(5x^(3)+4)?

A) (12x)/(15x^(2)+4)
B) (12x^(2))/(15x^(2)+4)
C) (12x^(2)-7)/(15x^(2)+4)
D) (12x)/(15x^(2)+4)