A Partial Solution Set Is Given for the Equation $$x ^ { 4 } - 9 x ^ { 3 } + 19 x ^ { 2 } - 9 x + 18 = 0 ; \quad \{ 3,6 \}$$

Multiple Choice

A partial solution set is given for the equation. $$x ^ { 4 } - 9 x ^ { 3 } + 19 x ^ { 2 } - 9 x + 18 = 0 ; \quad \{ 3,6 \}$$
Find the complete solution set.

A) $\quad 3,6 , - i , i$
B) $3,3,3 , i$
C) none of these
D) $3,6,0,0$
E) $3,6 , - 6 i , 6 i$