Which one of the following actions would be a shaping operation in 1/4ID SBCT's defense in the scenario? A. 2-23 Infantry battalion defeating an enemy force with fires in an engagement area in the main battle area. B. 2-1 Cavalry Squadron defeating enemy reconnaissance units in the security area forward of the main battle area. C. 1-38 Infantry battalion receiving Class III and Class V resupply in the main battle area