Find the Common Ratio of the Geometric Sequence $\frac{1}{2}, \frac{1}{4}, \frac{1}{8}, \frac{1}{16},...$

Multiple Choice

Find the common ratio of the geometric sequence. $\frac{1}{2}, \frac{1}{4}, \frac{1}{8}, \frac{1}{16},...$

A) $-\frac{1}{8}$
B) $\frac{1}{4}$
C) $\frac{1}{2}$
D) $-\frac{1}{2}$
E) $-\frac{1}{4}$