Which if the following best describes the Infantry Brigade Combat Team (IBCT)? a. Combined arms force organized around mounted infantry that operate effectively in most terrain and weather conditions. b. Combined arms force consisting of combined arms battalions of armored and mechanized infantry companies to concentrate overwhelming combat power. c. Combined arms force that fights primarily as a dismounted infantry formation, but balances combined arms capabilities with significant mobility. d. Combined arms formation organized around dismounted infantry, and optimized for dismounted operations in complex terrain