<prompt>  A 60 yr old male had a sudden fall in toilet. His BP was 9050 mm Hg and pulse was 100min. His relatives reported that his stool was blackdark in colour. Further careful history revealed that he is a known case of hypertension and coronary artery disease and was regularly taking aspirin, atenolol and sorbitrate. The most likely diagnosis isGastric ulcer with bleedingAcute myocardial infarction with cardiogenic shockAcute cerebrovascular accidentPulmonary embolism 