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
Mannitol infusion causes increase in 
Select and explain. 
A. Blood viscosity, B. Osmolarity, C. Intra-ocular tension, D. Intercranial tension
B: Osmolarity
Answer: B: Osmolarity 
Explanation: Ans. is 'b' i.e., Omolarity