How do you configure the report definition?

A list report includes columns for purchase requests and regional cost centers. A manager wants the report to show the total number of purchase requests for each of the regional cost centers.

How do you configure the report definition?
A . Summarize the regional cost centers by count.
B . Summarize the purchase requests column by count.
C . Use the purchase requests column to group the cost centers.
D . Filter the results so that the report includes only cost center and purchase requests.

Answer: B