A 45-year-old construction worker presents in summer after working in high heat. He is confused, tachycardic and hot to touch; rectal temperature is 40.5°C. He is not sweating. What is the most appropriate immediate management?AGive oral fluids and observe in a cool roomBApply ice packs to the axillae only and observeCRapid external cooling (e.g., ice water immersion or evaporative cooling) and aggressive supportive careDAdminister antipyretics onlyEDischarge after advising restCheck my answer