The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 20-year-old male college student presents to the emergency room at 4 AM in the morning with complaints of abdominal cramps, nausea, vomiting, and diarrhea for the past 2 hours. He was studying for his exams last night when he became hungry and ate some food from the afternoon after heating it for a while. He says that his symptoms began an hour after he ate the food. His temperature is 37°C (98.6°F), respiratory rate is 15/min, pulse is 106/min, and blood pressure is 90/78 mm Hg. A physical examination is within normal limits except for signs of dehydration. What is the most likely diagnosis?   (A) Cryptosporidiosis   (B) C. difficile colitis   (C) Bacillus cereus infection   (D) Norovirus infection
['(C) Bacillus cereus infection <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Cryptosporidiosis \n (B) C. difficile colitis \n (C) Bacillus cereus infection \n (D) Norovirus infection <> possible answers', '  A 20-year-old male college student presents to the emergency room at 4 AM in the morning with complaints of abdominal cramps, nausea, vomiting, and diarrhea for the past 2 hours. He was studying for his exams last night when he became hungry and ate some food from the afternoon after heating it for a while. He says that his symptoms began an hour after he ate the food. His temperature is 37°C (98.6°F), respiratory rate is 15/min, pulse is 106/min, and blood pressure is 90/78 mm Hg. A physical examination is within normal limits except for signs of dehydration. What is the most likely diagnosis? <> context@']