Solve the Inequality $$- x ^ { 2 } - 18 x - 81 < 0$$

Solve the inequality. $$- x ^ { 2 } - 18 x - 81 < 0$$

A) $( - \infty , \infty )$
B) $( - \infty , - 9 ) \cup ( 9 , \infty )$
C) $( - \infty , - 9 ) \cup ( - 9 , \infty )$
D) { }