Find the Product $\left( 5 b ^ { 5 } \right) \left( 3 b ^ { 6 } \right)$

Multiple Choice

Find the product. $\left( 5 b ^ { 5 } \right) \left( 3 b ^ { 6 } \right)$

A) $15 b ^ { 11 }$
B) $15 b ^ { 30 }$
C) $8 b ^ { 11 }$
D) $8 b ^ { 30 }$
E) none of these