This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
A patient of depression who is on lithium therapy is diagnosed to have hypeension. Which of the following antihypeensive agent should be avoided in order to reduce the risk of lithium toxicity? 
Select and explain. 
A. Methyldopa, B. Beta blockers, C. Calcium channel blockers, D. Diuretics
D: Diuretics
Answer: D: Diuretics 
Explanation: Lithium generally should not be given with diuretics because they reduce its renal clearance and add a high risk of lithium toxicity.