How can heat illness be distinguished on the field between heat exhaustion and heat stroke?

• A. Heat exhaustion presents with sweating, pale moist skin, and fatigue; heat stroke presents with hot, dry or sweating skin and confusion; treat with rest and hydration
• B. Heat exhaustion has hot dry skin; heat stroke has sweating
• C. Heat exhaustion has sweating, pale skin; heat stroke has hot dry skin and confusion; call EMS and aggressively cool
• D. Heat exhaustion and heat stroke are identical in symptoms

Answer: (C)