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
[{'content': 'Loss of heterozygosity is associated with - \nSelect and explain. \nA. Acute myeloid leukemia, B. ALL, C. Retinoblastoma, D. Promyelocytic leukemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]