EADP10 Question #50: Real Exam Question with Answer & Explanation

Using the Spatial Analyst IDW (Inverse Distance Weighted) tool an ArcGIS user interpolates a point feature class to a raster. The user notices that some high point values near the edge of the feature class seem to have a dramatic effect on the output. This occurs even in areas that are far from the high edge values. Which two parameters should the user consider changing in the IDW tool? (Choose two)