Solve the Inequality $$x ^ { 3 } + 2 x ^ { 2 } - 11 x + 20 \leq 0$$

Multiple Choice

Solve the inequality. Write the solution set in interval notation.
- $$x ^ { 3 } + 2 x ^ { 2 } - 11 x + 20 \leq 0$$

A) $[ - 5 , \infty )$
B) $( - \infty , - 5 ] \cup [ 4 , \infty )$
C) $( - \infty , - 5 ]$
D) $( - \infty , - 5 ] \cup [ - 3,4 ]$