Find the Greatest Common Factor of the Expressions $15 a b ^ { 2 }$

Multiple Choice

Find the greatest common factor of the expressions $15 a b ^ { 2 }$ and $45 a ^ { 2 } b ^ { 3 }$ .

A) $15 a b ^ { 2 }$
B) $675 a b ^ { 2 }$
C) $675 a ^ { 3 } b ^ { 5 }$
D) $15 a ^ { 3 } b ^ { 5 }$
E) $675 a ^ { 2 } b ^ { 3 }$