Express the Value in Scientific Notation $\frac { 0.00021 \times 0.0002 } { 0.0007 }$

Multiple Choice

Express the value in scientific notation.
- $\frac { 0.00021 \times 0.0002 } { 0.0007 }$

A) $6 \times 10 ^ { 4 }$
B) $6 \times 10 ^ { - 4 }$
C) $42 \times 10 ^ { - 5 }$
D) $42 \times 10 ^ { 5 }$