This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Transpo Processes, Subject name: Physiology
[{'content': 'A red cell with a volume of 100 cu.microns and intracellular osmolality of 300 mOsm was placed in a solution with an osmolality of 100 mOsm. What will be the final volume of this cell? \nSelect and explain. \nA. 33.33 cu.microns, B. 50 cu.microns, C. 150 cu.microns, D. 300 cu.microns', 'role': 'user'}, {'content': 'Answer: D \nExplanation: pi Vi = pf Vf 100 x 300 = 100 x Vf Vf = 300 Pi - initial osmolality; Pf - final osmolality Vi - initial volume; Vf - final volume', 'role': 'assistant'}]