Differentiate the function.

$y=\frac{8x^2-7}{5x^{3}9}$

Which of the following shows how to find the derivative of $f(x)?$

A$.y^{\text{'}}=\frac{(8x^2-7)(\frac{d}{dx}(8x^2-7))-(5x^{3}9)(\frac{d}{dx}(5x^{3}9))}{(5x^{3}9{)}^2}$

B$.y^{\text{'}}=\frac{(5x^{3}9)(\frac{d}{dx}(8x^2-7))-(8x^2-7)(\frac{d}{dx}(5x^{3}9))}{(5x^{3}9)}$

c$.y^{\text{'}}=(5x^{3}9)(\frac{d}{dx}(8x^2-7))-(8x^2-7)(\frac{d}{dx}(5x^{3}9))$

D$.y^{\text{'}}=\frac{(5x^{3}9)(\frac{d}{dx}(8x^2-7))-(8x^2-7)(\frac{d}{dx}(5x^{3}9))}{(5x^{3}9{)}^2}$

The derivative of $y=\frac{8x^2-7}{5x^{3}9}$ is