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: Ophthalmology
[{'content': 'Trachoma in a newborn cannot produce follicular reaction because: \nSelect and explain. \nA. Antibodies are transfered from mother, B. Adenoid layer is devoid of lymphoid tissue, C. Immunity is not developed, D. Incubation period is one year', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Adenoid layer is devoid of lymphoid tissue', 'role': 'assistant'}]