input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In a couple for treatment of infeility from the last four years, female paner is normal. Male paner has 0.8 ml semen volume per ejaculate on two repeated samples and absent fructose, with no sperms on examination under microscope. What is the next line of management?   (A) Per-rectal examination to check ejaculatory duct obstruction   (B) Give antioxidants   (C) Testicular biopsy   (D) Transrectal ultrasound to detect duct obstruction
output: ['(D) Transrectal ultrasound to detect duct obstruction <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Per-rectal examination to check ejaculatory duct obstruction  (B) Give antioxidants  (C) Testicular biopsy  (D) Transrectal ultrasound to detect duct obstruction <> possible answers', '  In a couple for treatment of infeility from the last four years, female paner is normal. Male paner has 0.8 ml semen volume per ejaculate on two repeated samples and absent fructose, with no sperms on examination under microscope. What is the next line of management? <> context']