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: Medicine
[{'content': 'Pseudo-hemoptysis is seen mostly with \nSelect and explain. \nA. Streptococcus, B. E. coli, C. Serratia Marcescens, D. R.S.V', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Serratia Marcesens", 'role': 'assistant'}]