PE $1-3.$ Consider the following requirements for a system supporting enrollments in a college or university. For each, determine if it is a feature or functional design element and explain your answer. If you find a requirement to be a functional design element, determine whether it focuses on data, logic, or the user interface.

$($Hint: Features will use the user$-$story "formula," and designs will pertain to data, logic, or the user interface.$)$:

a$.$ As a college administrator, I need to be able to define multiple sections of a course so that we can offer the same course on different days and times.

b$.$ As a student, I need to be able to enroll in multiple, different sections of a course so that I can create my course schedule for the semester.

c$.$ Data tracked for a course section should include the room number, day and time, maximum number of students that may enroll in it$,$ and the number of students currently enrolled in it$.$

d$.$ When a student tries to register for a course, the system should check to see if the number of current enrollments equals the maximum number of enrollments allowed. If so$,$ the system should show the student an error message: "Course section is fullplease pick another section."

e$.$ The system should include a screen that shows all the sections offered during a given semester, including the ability to filter those sections by department, course title, and which courses are currently full.

f$.$ For each course section, the system should include a screen showing the course number and name, the course section number, the room number, and a list of the students currently enrolled.