Given a Choice Between an FR 20 and an FR

Multiple Choice

Given a choice between an FR 20 and an FR 80 schedule of reinforcement, a rat would most likely (once it has enough experience) respond

A) four times as often on the FR 20 alternative as the FR 80.
B) four times as often on the FR 80 alternative as the FR 20.
C) entirely on the FR 80 alternative.
D) entirely on the FR 20 alternative.