This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Salivary Gland), Subject name: Surgery
Investigation using dye to find out stone in salivary gland - 
Select and explain. 
A. MR angiography, B. USG, C. Mammography, D. Sialography
D: Sialography
Answer: D: Sialography 
Explanation: Ans. is 'd' i.e., Sialographyo Sialography is sthe standard investigation to detect stone in a salivary gland in which a dye is injected through the duct.