This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Social & Preventive Medicine
[{'content': 'Modes of disease transmission by vectors are all except? \nSelect and explain. \nA. Regurgitation, B. Biting, C. Ingestion, D. Rubbing of of infected excrement', 'role': 'user'}, {'content': "Answer: C \nExplanation: Modes of disease transmission by vectors are: Biting Regurgitation of ingested material Rubbing of of infected excrement Contamination by body fluids of the vector Ref : Park's Textbook of Preventive medicine", 'role': 'assistant'}]