Use the Laws of Exponents to Simplify $\frac{8^{1 / 7}}{8^{-13 / 7}}$

Multiple Choice

Use the laws of exponents to simplify. Write the answer with positive exponents.
- $\frac{8^{1 / 7}}{8^{-13 / 7}}$

A) 64
B) 2
C) $8^{1 / 2}$
D) $\frac{1}{8^{12 / 7}}$