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: Medicine
Consider the following conditions - 1. Central diabetes insipidus, 2. Uncontrolled diabetes mellitus, 3. Mannitol infusion, 4. Post - obstructive diuresis. Which of the above result in solute diuresis? 
Select and explain. 
A. 1 and 2 only, B. 1, 2 and 3, C. 2, 3 and 4, D. 1, 3 and 4
C: 2, 3 and 4
Answer: C: 2, 3 and 4 
Explanation: None