This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nasolacrimal Disorders, Subject name: Ophthalmology
Not a cause for Mikulicz's syndrome:- 
Select and explain. 
A. Leukemia, B. Lymphosarcoma, C. Sarcoidosis, D. Diphtheria
D: Diphtheria
Answer: D: Diphtheria 
Explanation: Diphtheria is not a recognised cause for Mikulicz's syndrome Mikulicz's syndrome Bilateral symmetrical enlargement of lacrimal and salivary glands Causes Leukemia Lymphosarcoma Benign Lymphoid hyperplasia Hodgkin's disease Sarcoidosis Tuberculosis