This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Plasma volume is best evaluated by using? 
Select and explain. 
A. Evan blude, B. Inulin, C. Mannitol, D. Radoplabelled water
A: Evan blude
Answer: A: Evan blude 
Explanation: Plasma volume is measured using dyes like Evans blue that binds specifically to plasma proteins. (Ref: Textbook of physiology N Geetha 2 nd edition page no.62)