Simplify the Expression $12^{5 / 8} \cdot 12^{-1 / 8}$ A) $12^{1 / 2}$

Multiple Choice

Simplify the expression. Assume that all variables represent positive real numbers.
- $12^{5 / 8} \cdot 12^{-1 / 8}$

A) $12^{1 / 2}$
B) $12^{9 / 8}$
C) $\frac{1}{\sqrt{12}}$
D) 144