Express the Value in Scientific Notation $\left( 4 \times 10 ^ { - 3 } \right) \left( 1.2 \times 10 ^ { 6 } \right)$

Multiple Choice

Express the value in scientific notation.
- $\left( 4 \times 10 ^ { - 3 } \right) \left( 1.2 \times 10 ^ { 6 } \right)$

A) $4.8 \times 10 ^ { - 18 }$
B) $48 \times 10 ^ { 3 }$
C) $4.8 \times 10 ^ { 4 }$
D) $4.8 \times 10 ^ { 3 }$