Solve the Problem $f ( x ) = 3 x ^ { 2 } - 18 x + 24$

Multiple Choice

Solve the problem.
-Let $f ( x ) = 3 x ^ { 2 } - 18 x + 24$ . Find all values $x$ for which $f ( x ) = 0$ .

A) 2,4
B) $- 2 , - 4$
C) $3,2,4$
D) $0,2,4$