AgriProducers Has Customers All Over the United States That Need

AgriProducers has customers all over the United States that need their soil tested in their labs as well as their products for their crops. The crops and soil are different in the various large areas of the nation, such as the West Coast, and the Mid-West. Which type of departmentalization would be best for AgriProducers?

A) functional
B) process
C) product
D) geographic
E) temporal