Your Hamster Presses a Lever That Came with Its Cage

Multiple Choice

Your hamster presses a lever that came with its cage.After 4 presses, a food pellet is delivered; then after 6 presses another; then after 2 presses another.Based on this pattern of reinforcement you suspect that the lever was programmed with a

A) FR 4 schedule
B) VR 4 schedule
C) FI 4 min schedule
D) VI 4 min schedule