Find the Distance Between the Two Values of X at Which

Multiple Choice

Find the distance between the two values of x at which the function $\frac { 1 } { x ^ { 2 } - 3 x + 2 }$ is discontinuous.

A) 3
B) 2
C) 8
D) 1
E) 5
F) 4
G) 7
H) 6