This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
[{'content': 'a 68 yr old male with h/o bladder carcinoma while travelling by flight complained of left leg pain and hemoptysis .pulse is 102 on enquiry he had h/o prior hospitalisation for pulmonary embolism he had undergone surgical procedure 3wks back what is clinical probability of thrombolic risk with wells scoring ? \nSelect and explain. \nA. wells scoring cannot be calculated, B. low risk acc. to wells score, C. moderate risk, D. high risk', 'role': 'user'}, {'content': 'Answer: D \nExplanation: FEATURES SCORE(POINTS) Signs and symptoms of DVT 3 No alternative diagnosis 3 Hea rate more than 100 Bpm 1.5 immobilization more than 3 days or surgery in previous 4 weeks 1.5 Previous DVT or PE 1.5 Hemoptysis 1 Malignancy with active treatment in the past 6 months or under palliative care 1 Pretest clinical Probability PE Unlikely = < 4 PE Likely > 4 PE = Pulmonary embolism DVT = Deep Vein Thrombosis ref : bailey and love 27th ed', 'role': 'assistant'}]