Using matching law, answer the following questions about a behavior supported by concurrent VI 20 second and VI 30 second schedules. (6 points) a. What is the proportion of reinforcers obtained on the VI 20 second schedule? _____ b. If a pigeon pecked a key 60 times on the VI 20 second schedule and 40 times on the VI 30 second schedule, would this be consistent with the matching law (yes or no)? _____ c. If a pigeon pecked a key 135 times on the VI 20 second schedule and 90 times on the VI 30 second schedule, would this be consistent with the matching law (yes or no)? _____