<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:Four days after being hospitalized, intubated, and mechanically ventilated, a 30-year-old man has no cough response during tracheal suctioning. He was involved in a motor vehicle collision and was obtunded on arrival in the emergency department. The ventilator is at a FiO2 of 100, tidal volume is 920 mL, and positive end-expiratory pressure is 5 cm H2O. He is currently receiving vasopressors. His vital signs are within normal limits. The pupils are dilated and nonreactive to light. Corneal, gag, and oculovestibular reflexes are absent. There is no facial or upper extremity response to painful stimuli; the lower extremities show a triple flexion response to painful stimuli. Serum concentrations of electrolytes, urea, creatinine, and glucose are within the reference range. Arterial blood gas shows:pH 7.45pCO2 41 mm HgpO2 99 mm HgO2 saturation 99Two days ago, a CT scan of the head showed a left intracerebral hemorrhage with mass effect. The apnea test is positive. There are no known family members, advanced directives, or individuals with power of attorney. Which of the following is the most appropriate next step in management?? A: Ethics committee consultation, B: Cerebral angiography, C: Court order for further management, D: Remove the ventilator, E: Repeat CT scan of the head,  <response>: This is a question about the appropriate next step in managing a 30-year-old man who is mechanically ventilated and meets clinical criteria for brain death after a motor vehicle collision. The key findings are that he has no cough reflex, dilatednonreactive pupils, absent brainstem reflexes, and a positive apnea test, indicating brain death. A CT scan 2 days ago showed intracerebral hemorrhage with mass effect. There are no advance directives or surrogate decision makers available. The choices include consulting the ethics committee, getting a court order, repeating the CT scan, doing an angiogram, or removing the ventilator. Given the clinical picture is consistent with brain death, the most appropriate next step is to remove the ventilator and allow natural death, as continuing mechanical ventilation and other interventions would be medically futile. An ethics consultation may help guide decision-making given the lack of surrogates, but would not be the immediate next step. The CT findings and exam are sufficient to make a determination of brain death, so repeating the CT or doing an angiogram would not be appropriate. A court order is not needed if the medical team agrees on brain death.D: Remove the ventilator 