<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: The cause for contact ulcer of vocal cord
Options:
A. Voice abuse
B. Smoking
C. TB
D. Valignancy
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is A: Voice abuse. Explanation: No detailed explanation provided.<|im_end|>
