3^0 + 3^ - 13^ - 1 - 3^0 is simplified to = ?

Answer: Option A

$$\begin{array}{rl}& \frac{3^0+3^{-1}}{3^{-1}-3^0}\\ & =\frac{1+\frac{1}{3}}{\frac{1}{3}-1}\\ & =\frac{\frac{4}{3}}{-\frac{2}{3}}\\ & =-2\end{array}$$