Multiply or Divide and Write Scientific Notation for the Result $$\frac { 20 \times 10 ^ { - 9 } } { 5 \times 10 ^ { - 6 } }$$

Multiple Choice

Multiply or divide and write scientific notation for the result.
- $$\frac { 20 \times 10 ^ { - 9 } } { 5 \times 10 ^ { - 6 } }$$

A) $4 \times 10 ^ { - 15 }$
B) $8 \times 10 ^ { - 15 }$
C) $4 \times 10 ^ { - 3 }$
D) $8 \times 10 ^ { - 3 }$