This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following is not associated with food poisoning? \nSelect and explain. \nA. Onset with vomiting, B. Tenesmus, C. Leukocytosis, D. High skin subrface temperature', 'role': 'user'}, {'content': 'Answer: C \nExplanation: <p> In case of food poisoning blood investigation should be normal. Leucocytosis is seen in cholera, a differential diagnosis of food poisoning. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:240. <\\p>', 'role': 'assistant'}]