This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardio thoracic surgery  , Subject name: Surgery
[{'content': 'Bastio surgery for refractory LV hyperophy is: \nSelect and explain. \nA. Patch repair, B. MR repair, C. Ventriculectomy, D. Ventriculoplasty', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Bentall&;s Operation For aoic root aneurysm repair Reimplantation of coronary ostia into composite graft Bastio surgery For Left Ventricular hyperophy Ventriculectomy is done Ref: Bailey 27th edition Pgno: 936', 'role': 'assistant'}]