Find the Common Ratio, R, for the Geometric Sequence $32,16,8,4 , \ldots$

Find the common ratio, r, for the geometric sequence.
- $32,16,8,4 , \ldots$

A) 2
B) 1
C) $\frac { 1 } { 3 }$
D) $\frac { 1 } { 2 }$