To Monitor Campus Security, the Campus Police Office Is Taking

To monitor campus security, the campus police office is taking a survey of the number of students in a parking lot each 30 minutes of a 24-hour period with the goal of determining when
Patrols of the lot would serve the most students. If X is the number of students in the lot each
Period of time, then X is an example of

A) a categorical variable.
B) a discrete variable.
C) a continuous variable.
D) a statistic.