Solve the Inequality $$x ^ { 2 } - 4 x \geq - 3$$

Multiple Choice

Solve the inequality. Write the solution set in interval notation.
- $$x ^ { 2 } - 4 x \geq - 3$$

A) $[ 1,3 ]$
B) $[ 3 , \infty )$
C) $( - \infty , 1 ]$
D) $( - \infty , 1 ] \cup [ 3 , \infty )$