​Suppose That When Several Students Raise Their Hands in Class,the

Multiple Choice

​Suppose that when several students raise their hands in class,the professor calls on one at random.Thus,the more often you raise your hand,the more your chance of being called,but you can never be sure when that will be.Which schedule of reinforcement is this?

A) Fixed-interval
B) Variable-interval​
C) Fixed-ratio​
D) Variable-ratio​