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: Social & Preventive Medicine
[{'content': 'What is false about pertussis -a) Maternal antibody provides protection in infantsb) Fomites play a small role in spread of diseasec) Commonly seen in infantsd) Males and females both are equally affected \nSelect and explain. \nA. b, B. ad, C. ac, D. ab', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]