This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Jaipur foot was invented by ? \nSelect and explain. \nA. P. K. Sethi, B. S. K. Verma, C. B. L. Sehgal, D. H. R. Gupta', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., P. K. Sethi P. K. Sethi. Pramod Karan Sethi (28 November 1927 - 6 January 2008) was an Indian ohopaedic surgeon. With Ram Chandra Sharma, he co-invented the "Jaipur foot", an inexpensive and flexible aificial limb, in 1969.', 'role': 'assistant'}]