This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver & Biliary Tract, Subject name: Pathology
[{'content': 'The condition associated with their formation is \nSelect and explain. \nA. Hypomotility of gall bladder, B. Accelerated cholesterol crystal nucleation, C. Hypersecretion of mucus, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) All of the above* The figure shows gall bladder filled with gall stones. Causes of its formation can includea. Hypomotility of gall bladderb. Accelerated cholesterol crystal nucleationc. Hypersecretion of mucus.', 'role': 'assistant'}]