input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A radiotherapist prescribes a new drug combination of chemotherapy and immunotherapy for metastatic melanoma. It prolongs the survival. Which of the following is true in this situation?   (A) Incidence reduces and prevalence increases   (B) Incidence remains the same and prevalence increases   (C) Incidence reduces and prevalence remains the same   (D) Incidence increases and prevalence reduces
output: ['(B) Incidence remains the same and prevalence increases <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Incidence reduces and prevalence increases  (B) Incidence remains the same and prevalence increases  (C) Incidence reduces and prevalence remains the same  (D) Incidence increases and prevalence reduces <> possible answers', '  A radiotherapist prescribes a new drug combination of chemotherapy and immunotherapy for metastatic melanoma. It prolongs the survival. Which of the following is true in this situation? <> context']