Differentiate the function.

$y=\frac{5x^2-4}{7x^{3}2}$

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

A$.y^{\text{'}}=\frac{(5x^2-4)(\frac{d}{dx}(5x^2-4))-(7x^{3}2)(\frac{d}{dx}(7x^{3}2))}{(7x^{3}2{)}^2}$

B$.y^{\text{'}}=\frac{(7x^{3}2)(\frac{d}{dx}(5x^2-4))-(5x^2-4)(\frac{d}{dx}(7x^{3}2))}{(7x^{3}2)}$

c$.y^{\text{'}}=(7x^{3}2)(\frac{d}{dx}(5x^2-4))-(5x^2-4)(\frac{d}{dx}(7x^{3}2))$

D$.y^{\text{'}}=\frac{(7x^{3}2)(\frac{d}{dx}(5x^2-4))-(5x^2-4)(\frac{d}{dx}(7x^{3}2))}{(7x^{3}2{)}^2}$

The derivative of $y=\frac{5x^2-4}{7x^{3}2}$ is $$