Which object has the least thermal energy?

 - a 350-gram mug of cocoa at a temperature of 151°F
 - a 350-gram mug of cocoa at a temperature of 115°F
 - a 350-gram mug of cocoa at a temperature of 118°F
All three mugs of cocoa have the same mass but different temperatures. Since the 115°F mug of cocoa is the coldest, it has the least thermal energy.