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': 'An Afroamerican boy DI car ui age presented with abdominal pain, chronic hemolysis and abnormal RBC shape on peripheral smear. Most likely disorder responsible for this condition: \nSelect and explain. \nA. Point mutation, B. Trinucleotide repeat, C. Antibody against RBC membrane, D. Genomic imprinting', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Point mutation', 'role': 'assistant'}]