Evaluate the Function $f(x)=\frac{1}{4-3 x}$ , Find $f(r-3)$
A) $\frac{1}{r-3-3 x}$ B) $\frac{1}{1-3 r}$

Multiple Choice

Evaluate the function.
-Given that $f(x) =\frac{1}{4-3 x}$ , find $f(r-3)$ .

A) $\frac{1}{r-3-3 x}$
B) $\frac{1}{1-3 r}$
C) $\frac{1}{13+3 b}$
D) $\frac{1}{13-3 r}$