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': 'While pronouncing S, T, D, N, Z sounds, tip of tongue makes contact with: \nSelect and explain. \nA. Anterior 2/3rd of plate, B. Maxillary canines, C. Inner 2/3rd of lower lip, D. Does not make any contact', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Linguopalatal sounds (Anterior Palate):\n\nThe linguopalatal sounds are “C (soft), D, T, N, Z and R”\nProduced by: When the tip of the tongue contacts the anterior portion of the palate or the lingual side of anterior teeth.\nImportance of Linguopalatal sounds: When the denture base in the rugae\xa0area is too thick and can produce a similar effect. “S” sounds produced by the position of the tongue so that air stream released through a small gap between tongue and rugae, “S” will sound as “SH” when anterior teeth are anteroposteriorly displaced.', 'role': 'assistant'}]