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
Toxic dose of lithium - 
Select and explain. 
A. 0.6, B. 12, C. 2.6, D. <0.6
C: 2.6
Answer: C: 2.6 
Explanation: Ans. is 'c' i.e., 2.6