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
In RVG bit depth is seen of? 
Select and explain. 
A. 8 bit, B. 6 bit, C. 12 bit, D. 4 bit
A: 8 bit
Answer: A: 8 bit 
Explanation: None