<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 27-year-old man presents to the emergency department following a motor vehicle accident. Having been found as a restrained driver, he did not suffer from any chest injuries; nevertheless, his legs were pinned in position by the front of the highly damaged vehicle. After a prolonged extrication, the man sustained multiple fractures on his left femur and tibia. That same night, he underwent surgery to address his left leg fractures. In the next morning, the man suddenly developed severe dyspnea. Upon examination, he is noted to have a diffuse petechial rash. His vital signs are the following: blood pressure is 11167 mm Hg, pulse rate is 107min, respiratory rate is 27min, oxygen saturation level is 82, and his body temperature is normal. What is the most likely mechanism of his respiratory distress?? A: Pulmonary edema, B: Cardiac tamponade, C: Bacterial pneumonia, D: Spontaneous pneumothorax, E: Fat embolism,  <response>: This is a clinical vignette describing a 27-year-old man who developed acute respiratory distress the morning after undergoing surgery to address leg fractures sustained in a motor vehicle accident. The key findings are severe dyspnea, diffuse petechial rash, tachycardia, tachypnea, and hypoxemia. This constellation of findings shortly after orthopedic surgery involving long bone fractures is classic for fat embolism syndrome. The petechial rash and hypoxemia indicate pulmonary involvement. Fat emboli likely entered his circulation from his fractured bones during surgery. The other answer choices can be ruled out based on the time course and lack of supporting clinical evidence.E: Fat embolism 