This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following disease is NOT caused by exposure to cold? \nSelect and explain. \nA. Trench fever, B. Trench feet, C. Chilblains, D. Frost bite', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Exposure to cold causes frost bite, chilblains and trench feet. Trench fever (also known as "Five day fever", "Quintan fever") is a disease transmitted by body lice. Ref: Park 21st edition, page: 746.', 'role': 'assistant'}]