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
Slow Or soft start Polymerization is seen in: 
Select and explain. 
A. L.E.D light cure units., B. Laser light cure units., C. QTH light cure units., D. PAC light cure units.
C: QTH light cure units.
Answer: C: QTH light cure units. 
Explanation: None