question: Q:A 14-year-old boy is brought to the physician for generalized fatigue and mild shortness of breath on exertion for 3 months. He has a history of recurrent patellar dislocations. He is at the 99th percentile for height and at the 30th percentile for weight. His temperature is 37°C (98.6°F), pulse is 99/min, and blood pressure is 140/50 mm Hg. Examination shows scoliosis, a protruding breast bone, thin extremities, and flat feet. Ocular examination shows upwards displacement of bilateral lenses. A grade 3/6 early diastolic murmur is heard along the left sternal border. Further evaluation of this patient is most likely to show which of the following?? 
  {'A': 'Paradoxical splitting of S2', 'B': 'Pulsus paradoxus', 'C': 'Fixed splitting of S2', 'D': 'Water hammer pulse', 'E': 'Radio-femoral pulse delay'},