Solve the Inequality $$x ^ { 2 } - 5 x + 4 > 0$$

Multiple Choice

Solve the inequality. Write the solution set in interval notation.
- $$x ^ { 2 } - 5 x + 4 > 0$$

A) $( 4 , \infty )$
B) $( 1,4 )$
C) $( - \infty , 1 )$
D) $( - \infty , 1 ) \cup ( 4 , \infty )$