A 63-year-old man on a medical ward complains of new central chest pain. He looks pale and clammy. Observations show HR 110/min, BP 95/60 mmHg, oxygen saturation 92% on air. What is the most appropriate immediate action?AArrange a routine troponin test for the next morningBGive an antiacid and observeCPerform immediate ECG, give oxygen if needed and inform senior staffDDischarge him home if pain settlesEWait to see if the pain recurs before actingCheck my answer