Justin Is Teaching His Dog, Tiara, to Jump on Command

Multiple Choice

Justin is teaching his dog, Tiara, to jump on command. He gives her a treat when she jumps on command only when the treats are with him. When the treats are not in his reach, he does not give her a treat. In this context, Justin is using _____. 

A) partial reinforcement  
B) negative reinforcement  
C) continuous reinforcement  
D) uninterrupted reinforcement