Gradishar Works pays annual dividends. For the past six years, the firm has paid dividends of $1.38, $1.42 $1.25, $1.48, $1.50, and $1.55, respectively. What is the geometric average dividend growth rate for this time period? 

Multiple Choice 

2.95% 

3.25% 

3.52% 

4.02% 

4.18%