When Creating a Report Template, How Are the Results Limited

When creating a report template, how are the results limited to show only the activity of a specific subnet?

A) Create a custom search in Cisco FMC and select it in each section of the report.
B) Add an Input Parameter in the Advanced Settings of the report, and set the type to Network/IP.
C) Add a Table View section to the report with the Search field defined as the network in CIDR format.
D) Select IP Address as the X-Axis in each section of the report.