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': 'Most common complaint of the patient with a thick-\npalatal bar in a RPD is: \nSelect and explain. \nA. Distortion under occlusal stress, B. Poor dissipation of farce due to rigidity, C. Difficulty in pressing the food backward and swallowing, D. Loss of taste sensation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]