Perform the Operation $\left( 3.2 \times 10 ^ { 6 } \right) \left( 4.4 \times 10 ^ { 2 } \right)$

Multiple Choice

Perform the operation. Leave answer in scientific notation. $\left( 3.2 \times 10 ^ { 6 } \right) \left( 4.4 \times 10 ^ { 2 } \right)$

A) $14.08 \times 10 ^ { 8 }$
B) $1.408 \times 10 ^ { 9 }$
C) $1.408 \times 10 ^ { 7 }$
D) $1.408 \times 10 ^ { 8 }$