Jayden Is Trying to Teach His Dog Some Tricks

Multiple Choice

Jayden is trying to teach his dog some tricks. So he gives him a doggie treat if he rolls over after 2 min have passed. Then he gives him another treat if he rolls after 1 minute has passed. Next, he gives the dog a treat if he performs the behaviour after 3 minutes have passed. In each case, the dog must perform the roll over before he gets the treat. Jayden is using a(n)

A) FR 2 minute schedule
B) a VR 2 minute schedule
C) FI 2 minute schedule
D) VI 2 minute schedule
E) VI 6 minute schedule