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
Computer controlled injection system is called: 
Select and explain. 
A. CCD, B. WAND, C. CCI, D. JET
B: WAND
Answer: B: WAND 
Explanation: WAND:
It is computer controlled injection system Dosage is controlled by computer.