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
On rubber dam application gingiva is seen protruding out of margins, it can be seen due to? 
Select and explain. 
A. Edematous gingival tissues, B. Holes paced too far apart, C. Using a light-weight dam, D. Holes placed too close together
D: Holes placed too close together
Answer: D: Holes placed too close together 
Explanation: None