Find the Least Common Denominator of the Rational Expressions $\frac { x - 1 } { x ^ { 2 } + 9 x + 8 }$

Multiple Choice

Find the least common denominator of the rational expressions.
- $\frac { x - 1 } { x ^ { 2 } + 9 x + 8 }$ and $\frac { 1 } { x ^ { 2 } + x }$

A) $x + 1$
B) $( x + 1 ) ^ { 2 }$
C) $x ( x + 1 ) ^ { 2 }$
D) $x ( x + 8 ) ( x + 1 )$