This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sleep Disorders, Subject name: Psychiatry
[{'content': 'Pagophagia involves eating - \nSelect and explain. \nA. Ice, B. Sand, C. Clay, D. Salt', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Ice GeophagiaEating clayPagophagiaEating icePlambophagiaEating leadAmylophagiaEating starchCoprophagiaEating fecesCautopyreiophagiaEating burnt matchesTricophagiaEating hairLithophagiaEating stonesGeomelophagiaEating raw potatoes", 'role': 'assistant'}]