I'm almost certain that the answer would be X and Y
Hoped this helped!
        
             
        
        
        
I think it is called a Case study.
Hopefully it is correct! :)
        
             
        
        
        
We may apply Fleming's Left Hand Rule of Electromagnetism to determine how a charged particle behaves in a magnetic field. However, because the gamma rays do not have a charge on them, like alpha particles and beta particles do, they are not deflected. 
Gamma rays are electromagnetic waves and its is a characteristic of electromagnetic waves that they have no charge.
        
             
        
        
        
The potential energy changes into kinetic energy. :)