Multiply or Divide and Write Scientific Notation for the Result $$\left( 5 \times 10 ^ { 7 } \right) \left( 8 \times 10 ^ { 7 } \right)$$

Multiple Choice

Multiply or divide and write scientific notation for the result.
- $$\left( 5 \times 10 ^ { 7 } \right) \left( 8 \times 10 ^ { 7 } \right)$$

A) $4 \times 10 ^ { 14 }$
B) $4 \times 10 ^ { 15 }$
C) $40 \times 10 ^ { 15 }$
D) $40 \times 10 ^ { 49 }$