This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Medicine
[{'content': 'Which disease does not cause AV nodal block? \nSelect and explain. \nA. chagas, B. cat scratch, C. Lyme disease, D. Toxoplasmosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. Cat scratchETIOLOGY OF AV BLOCKInfectious DiseaseEndocarditisLyme diseaseChagas diseaseSyphilisTuberculosisDiphtheriaToxoplasmosisFor more update see the explanation of Ques No-16 in NEET medicine pattern.', 'role': 'assistant'}]