Provide an Appropriate Response

Multiple Choice

Provide an appropriate response.
-Which of the random variables described below is/are discrete random variables? The random variable X represents the number of heads when a coin is flipped 20 times.The random variable Y represents the number of calls received by a car tow service in a year. The random variable Z represents the weight of a randomly selected student.

A) X, Y, and Z
B) X and Y
C) X only
D) Y only