input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A group of investigators is studying the association between a fire retardant chemical used on furniture and interstitial lung disease. They use hospital records to identify 50 people who have been diagnosed with interstitial lung disease. They also identify a group of 50 people without interstitial lung disease who are matched in age and geographic location to those with the disease. The participants' exposure to the chemical is assessed by surveys and home visits. Which of the following best describes this study design?   (A) Case-control study   (B) Case series   (C) Retrospective cohort study   (D) Randomized controlled trial
output: ['(A) Case-control study <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Case-control study  (B) Case series  (C) Retrospective cohort study  (D) Randomized controlled trial <> possible answers', "  A group of investigators is studying the association between a fire retardant chemical used on furniture and interstitial lung disease. They use hospital records to identify 50 people who have been diagnosed with interstitial lung disease. They also identify a group of 50 people without interstitial lung disease who are matched in age and geographic location to those with the disease. The participants' exposure to the chemical is assessed by surveys and home visits. Which of the following best describes this study design? <> context"]