input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In choriocarcinoma, lung metastasis occurs in which stage?   (A) Stage 1   (B) Stage 2   (C) Stage 3   (D) Stage 4
output: ['(C) Stage 3 <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Stage 1  (B) Stage 2  (C) Stage 3  (D) Stage 4 <> possible answers', '  In choriocarcinoma, lung metastasis occurs in which stage? <> context']