Evaluate the Expression Using Exponential Rules $\left( 4 \times 10 ^ { 5 } \right) \times \left( 2 \times 10 ^ { 2 } \right)$

Multiple Choice

Evaluate the expression using exponential rules. Write the result in standard notation.
- $\left( 4 \times 10 ^ { 5 } \right) \times \left( 2 \times 10 ^ { 2 } \right)$

A) $8,000,000$
B) $80,000,000$
C) $8,000,000,000$
D) $800,000,000$