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: Pharmacology
All of the following are side effects of Lithium except 
Select and explain. 
A. Hypothyroidism, B. Diabetes Insipidus, C. Hypercalcemia, D. Leucopenia
D: Leucopenia
Answer: D: Leucopenia 
Explanation: Lithium causes increase in Leucocyte count, not Leucopenia. Often it is used to treat Leucopenia.