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 transmitted by Ahropod - \nSelect and explain. \nA. Q fever, B. Rickettsial pox, C. Rocky mountain spotted fever, D. Relapsing fever', 'role': 'user'}, {'content': "Answer: A \nExplanation: There is no ahropod involved in Q fever. Transmission occur by inhalation of infected dust. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 276", 'role': 'assistant'}]