A data professional working for a large retail chain analyzes customer purchase data to identify trends and patterns. While reviewing a scatterplot of purchase frequency versus amount, the analyst notices a cluster of data points far away from the main trendline. What should they do with this outlier?

a. Determine whether it is an important observation
b. Drop it from the scatterplot
c. Hide it from the scatterplot
d. Move it closer to the main trendline