Which statement best describes the motivation for the Army Service component command focus transferring from "Setting the Theater" to "Setting the Joint Operations Area"? A. U.S.C. Title 10 and / or Army support for other Services requirements increase beyond the capabilities of the initial theater set B. Combatant commander priorities shift to a specific nation or area and/or a joint operations area is established C. Diplomatic agreements allow U.S. forces to have access to ports, terminals, airfields, and bases within the operational area