Solve the Problem $f ( x ) = x ^ { 2 } - 2 x - 24$

Multiple Choice

Solve the problem.
-Given $f ( x ) = x ^ { 2 } - 2 x - 24$ , find all values for $x$ for which $f ( x ) < 0$ .

A) $( - \infty , - 4 ) \cup ( 6 , \infty )$
B) $( 6 , \infty )$
C) $( - \infty , - 4 )$
D) $( - 4,6 )$