Rewrite the Expression Using Only Positive Exponents, and Simplify $\frac { \left( 2 a ^ { - 3 } b ^ { 2 } \right) ^ { 3 } b } { \left( 10 a ^ { 4 } b \right) ^ { 4 } }$

Multiple Choice

Rewrite the expression using only positive exponents, and simplify. Assume that any variables in the expression are nonzero.
$\frac { \left( 2 a ^ { - 3 } b ^ { 2 } \right) ^ { 3 } b } { \left( 10 a ^ { 4 } b \right) ^ { 4 } }$

A) $\frac { b ^ { 3 } } { 5 a ^ { 25 } }$
B) $\frac { b ^ { 3 } } { 1,250 a ^ { 25 } }$
C) $\frac { b ^ { 3 } } { 5 a ^ { 24 } }$
D) $\frac { b ^ { 2 } } { 5 a ^ { 24 } }$
E) $\frac { b ^ { 2 } } { 1,250 a ^ { 25 } }$