Using a Ratio Schedule, Reinforcement Is Provided Based on _____

Using a ratio schedule, reinforcement is provided based on _____. Using an interval schedule, reinforcement is provided based on _____.

A) the amount of elapsed time; the number of responses made
B) how quickly responses are made; the number of responses made
C) the amount of elapsed time; how quickly responses are made
D) the number of responses made; the amount of elapsed time