Find the average rate of change for the given function.

$f(x)=x^{2}12x$ botween $x=0$ and $x=7$

What expression can be used to find the average rate of change of the function $f(x)$ over $0,7?$

A$.\underset{x0}{lim}\frac{1(7)-1(0)}{7-0}$

B$.\underset{h0}{lim}\frac{f(0h)-t(0)}{h}$

C$.\frac{4(7)-4(0)}{7-0}$

D$.\frac{f(7)f(0)}{70}$