This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'A complete denture patient is having difficulty in swallowing is due to \nSelect and explain. \nA. Increased interocclusal space, B. Decreased interocclusal space, C. Decreased vertical dimension, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]