This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatitis, Subject name: Medicine
[{'content': 'Treatment for genotype 1a of hepatitis C \nSelect and explain. \nA. Ledipsavir and Sofosbuvir, B. Sofosbuvir and velpatasvir, C. Pegylated interferon and lamivudine, D. Pegylated interferon and Ribavarin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: - Hepatitis C genotypes and their treatment Genotype 1a Ledipasvir + sofosbuvir Genotype 1b Ledipasvir + sofosbuvir Genotype 2 Sofosbuvir + velpatasvir Genotype 3 Sofosbuvir + velpatasvir Genotype 4 Sofosbuvir + velpatasvir Genotype 5,6 Sofosbuvir + velpatasvir', 'role': 'assistant'}]