On a Concurrent VR 50 VR 100 Schedule of Reinforcement

Multiple Choice

On a concurrent VR 50 VR 100 schedule of reinforcement, a pigeon would likely (once it has enough experience)

A) show exclusive preference for the VR 100 alternative.
B) show exclusive preference for the VR 50 alternative.
C) respond twice as much on the VR 50 alternative as the VR 100.
D) respond twice as much on the VR 100 alternative as the VR 50.