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 establishing balanced occlusion, lingual cusps of maxillary posterior teeth on the non-working side should contact: 
Select and explain. 
A. Facial incline of the Lingual cusp of mandibular posterior teeth, B. The lingual incline of the lingual cusp of mandibular posterior teeth, C. Lingual incline of the facial cusp of mand. posterior teeth, D. Central fossa of mandibular posterior teeth
C: Lingual incline of the facial cusp of mand. posterior teeth
Answer: C: Lingual incline of the facial cusp of mand. posterior teeth 
Explanation: None