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': 'Nasolacrimal duct is directed: \nSelect and explain. \nA. Downwards, slightly outwards and backwards, B. Downwards, slightly inwards and backwards, C. Downwards, slightly outwards and forwards, D. Downwards, slightly inwards and forwards', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Downwards, slightly outwards and backwards', 'role': 'assistant'}]