A 28-year-old male was struck in the chest with a baseball bat during an altercation. He is conscious and alert and complains of severe chest pain. Your assessment reveals a large area of ecchymosis over the sternum and a rapid, irregular pulse. In addition to providing supplemental oxygen, you should:.A. prepare for immediate transport. B. apply bulky dressings to the sternum. C. determine if he has cardiac problems. D. apply an AED and assess his BP.