$1-\frac{7}{\mathrm{x}}-\frac{18}{\mathrm{x}^{2}}=0$ A) $\{9,2\}$ B) $\{-9,-2\}$ C) $\{-9,2\}$ D) $\{9,-2\}$

Multiple Choice

$1-\frac{7}{\mathrm{x}}-\frac{18}{\mathrm{x}^{2}}=0$

A) $\{9,2\}$

B) $\{-9,-2\}$

C) $\{-9,2\}$

D) $\{9,-2\}$