This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of Nasal Cavity, Subject name: ENT
Direction of Nasolacrimal Duct is 
Select and explain. 
A. Downward,Backward and Medially, B. Downward,Backward and Laterally, C. Downward,Forward and Medially, D. Downward,Forward and Laterally
B: Downward,Backward and Laterally
Answer: B: Downward,Backward and Laterally 
Explanation: O Nasolacrimal duct opens in anterior pa of inferior meatus. O Direction of nasolacrimal duct is Backwards (Inwards),laterally and downwards (pneumonic: NLD). It courses anterior to maxillary ostium O Opening of nasolacrimal duct is guarded by Hasner's mucosal valve