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: Pathology
Which mechanism will play the dominant role in regenerative repair after chronic liver injury or inflammation? 
Select and explain. 
A. Proliferation of the residual hepatocytes, B. Repopulation from progenitor cells, C. Replacement of parenchymal cells by collagen, D. Both 1 & 2
B: Repopulation from progenitor cells
Answer: B: Repopulation from progenitor cells 
Explanation: Liver regeneration from progenitor cells.
In situations in which the proliferative capacity of hepatocytes is impaired, such as after chronic liver injury or inflammation, progenitor cells in the liver contribute to repopulation.
Robin’s Textbook of pathology 10th ed  Page 89