Simplify and Write with Positive Exponents Only $\frac { 4 ^ { 7 } } { 4 ^ { - 3 } }$

Multiple Choice

Simplify and write with positive exponents only.
- $\frac { 4 ^ { 7 } } { 4 ^ { - 3 } }$

A) 1,048,576
B) - $1$ 1/1048576
C) $\frac { 1 } { 256 }$ 1/256
D) 256