Solve the Quadratic Inequality $$x ^ { 2 } - 10 x + 20 \geq 0$$

Multiple Choice

Solve the quadratic inequality. Write the solution set in interval notation.
- $$x ^ { 2 } - 10 x + 20 \geq 0$$

A) $( - \infty , 5 - \sqrt { 5 } ) \cup ( 5 + \sqrt { 5 } , \infty )$
B) $( - \infty , - \sqrt { 5 } ] \cup [ \sqrt { 5 } , \infty )$
C) $[ 5 - \sqrt { 5 } , 5 + \sqrt { 5 } ]$
D) $( - \infty , 5 - \sqrt { 5 } ] \cup [ 5 + \sqrt { 5 } , \infty )$