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
When testing arrangement of teeth at the trial insertion 54. of complete dentures, the lower lip should, when pronounce the letter 'f' in fifty 
Select and explain. 
A. Be anterior to maxillary incisors, B. Not come near maxillary incisors, C. Light contact maxillary incisors incisal edge, D. None of the above
C: Light contact maxillary incisors incisal edge
Answer: C: Light contact maxillary incisors incisal edge 
Explanation: None