Energy used since long time ago is a energy production system where the energy is joined with the new resources and alll of that turns into electric energy!<span />
        
                    
             
        
        
        
I think it’s the third option, I’m really sorry if that’s incorrect!!! You might wanna wait for someone else to answer :)
        
                    
             
        
        
        
Actually, it is false. P-waves arrive first and then S-waves arrive.