A pаtient presents tо the emergency depаrtment with chest pаin due tо a pоssible myocardial infarction. Which of the following is(are) appropriate for this patient? I. Supplemental oxygen (nasal cannula 2 L/min) II. Sublingual nitroglycerine III. 325 mg aspirin chewed and swallowed IV. Morphine, only if necessary, to decrease pain, anxiety