Mowrer and Jones (1945) put rats on either an FR 1, FR 2, FR 3, or FR 4 schedule. After each schedule had been reinforced 20 times across numerous training schedules, the extinction phase began. Which of the following is true? Group of answer choices The FR 1 schedule extinguished the fastest by responding the least The FR 2 schedule extinguished the fastest by responding the least The FR 3 schedule extinguished the fastest by responding the least The FR 4 schedule extinguished the fastest by responding the least