Find the LCD of the Rational Expressions in the List $$\frac { a - 1 } { a ^ { 2 } + 2 a + 1 } , \frac { - 2 } { a ^ { 2 } + a }$$

Multiple Choice

Find the LCD of the rational expressions in the list.
- $$\frac { a - 1 } { a ^ { 2 } + 2 a + 1 } , \frac { - 2 } { a ^ { 2 } + a }$$

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