A nurse is the triage officer in the emergency department during a disaster when four clients arrive following a factory explosion. Which of the following clients should the nurse care for first?

A An unconscious adult client who has no respirations, capillary refill is > 2 seconds, and paramedics have already tried to reposition airway without results B A conscious adult client who has a broken tibia, blood pressure of 160/90 mm Hg, and heart rate of 118 beats per minute D A conscious adult client who reports shortness of breath, has a respiratory rate of 24/min, and capillary refill of <2 seconds C An unconscious adult client who has a sucking chest wound, SpO2 of 85%, and capillary refill of < 2 seconds