Use the Laws of Exponents to Simplify $\frac { 2 ^ { - 7 } } { 2 ^ { 3 } }$

Multiple Choice

Use the laws of exponents to simplify. Do not use negative exponents in your answer.
- $\frac { 2 ^ { - 7 } } { 2 ^ { 3 } }$

A) $\frac { 1 } { 2 ^ { 10 } }$
B) $\frac { 1 } { 2 ^ { 4 } }$
C) $2 ^ { 4 }$
D) $2 ^ { 10 }$