This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Universal ( Standard) precaution to be observed by surgeons for the preventation of hospital acquired HIV infection include the following except \nSelect and explain. \nA. Wearing gloves and other barrier precaution, B. Washing hands on contamination, C. Handling sharp instruments with care, D. Pre - operative screening of all patients of HIV', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Standard precautions are meant to reduce the risk of transmission of bloodborne and other pathogens from both recognized and unrecognized sources. Some of the key elements include : Hand hygiene Gloves Facial protection Gown Prevention of neddle stick and injuries from sharps Respiratory hygine and cough etiquette Environmental cleaning Linens Waste disposal Patient care equipment', 'role': 'assistant'}]