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: Pathology
[{'content': 'Valve usually not involved in rheumatic fever ? \nSelect and explain. \nA. Mitral, B. Aoic, C. Pumonary, D. Tricuspid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., Pumonary "The pulmonary valve is least frequently involved" In Rheumatic fever o Commonest valve to involve Mitral valve o 2nd commonest valve to involve Aoic valve o Least frequently involved value ---> Pulmonary valve o Most common valvular deformity produced --> Mitral regurgitation', 'role': 'assistant'}]