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: Anatomy
Prophylactic maintenance level of lithium is 
Select and explain. 
A. 0.6-0.8 mEq/L, B. 0.8-1.2 mEq/L, C. 2-4 mmol /L, D. 2-4 mEQ/L
A: 0.6-0.8 mEq/L
Answer: A: 0.6-0.8 mEq/L 
Explanation: Just facts