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
Gingival finish lines are placed 
Select and explain. 
A. Supra/subgingivally according to need, B. For better cleansing, C. Subgingivally only, D. Supragingivally only
A: Supra/subgingivally according to need
Answer: A: Supra/subgingivally according to need 
Explanation: None