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: Microbiology
[{'content': 'A 4 yr old paially immunized boy came to OPD with history of bouts of coughing. On staining the sputum sample an organism with bipolar staining was seen. Which among the following organism it would be ? \nSelect and explain. \nA. Y. Pestis, B. B. peussis, C. S. Agalactae, D. K. Pneumonae', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., B. peussis Bouts of Coughing and bipolar staining suggest the diagnosis of whooping cough (peussis).", 'role': 'assistant'}]