Solve the Quadratic Inequality $$x ^ { 2 } - 3 x - 28 \leq 0$$

Multiple Choice

Solve the quadratic inequality. Write the solution set in interval notation.
- $$x ^ { 2 } - 3 x - 28 \leq 0$$

A) $[ 7 , \infty )$
B) $( - \infty , - 4 ] \cup [ 7 , \infty )$
C) $( - \infty , - 4 ]$
D) $[ - 4,7 ]$