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
Benzoin methyl ether in a polymer indicates that they may be cured in the presence of: 
Select and explain. 
A. UV light, B. Visible light, C. Infrared light, D. Diketone
A: UV light
Answer: A: UV light 
Explanation: Homopolymers of 4-acryloyloxybenzoin methyl ether (ABME) and 4-acryloyloxy-α-methylbenzoin methyl ether (AMBE)  as well as copolymers of AMBE with (-)-menthyl acrylate (MtA) and with different N,N-dialkylaminoethyl acrylates have been employed in the photoinitiated polymerization and crosslinking of a standard acrylic formulation for u.v. clear curable coatings.