The number of students enrolled in each course. The maximum enrollment is $25$ since there can only be $25$ people officially signed up$.$

The number of students on the waitlist for each course. This is the number of students signed up minus the $25$ who are already enrolled.

The course that was the most popular, included the number of students on the waitlist. Include the course name$($from course$\_$names$[]$ list$)$ and the total number of enrollments$($from enrollment$[]$ list$).$