56-year-old with suspected TIA. Which step should be taken immediately?AStart aspirin 75 mg and arrange outpatient neuroimaging within 1 monthBNo medication until imaging confirms TIACBegin aspirin 300 mg daily and arrange urgent neuroimaging within 24 hoursDBegin clopidogrel 75 mg daily immediatelyERefer for routine follow-up in 2 weeksCheck my answer