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
Which of the following mandibular major connector is more esthetic, if wide anterior teeth diastema is present: 
Select and explain. 
A. Lingual plate., B. Lingual bar., C. Continuous bar retainer., D. Labial bar.
C: Continuous bar retainer.
Answer: C: Continuous bar retainer. 
Explanation: None