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: Gynaecology & Obstetrics
[{'content': 'Regarding listerosis in pregnancy: \nSelect and explain. \nA. Mode of Transmission of infection is sexual, B. Is associated with meningoencephalitis of the newborn, C. May present with skin rash at birth, D. In labour liquor is meconium stained', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]