What statement is true:

a$)$ A catalog year is a list of courses and$/$or other specific set of requirements that were in effect during a given academic year.

b$)$ If you do not enroll in courses related to your program for more than three consecutive terms, you must re$-$enroll and will then be subject to the requirements of the catalog year of your return.

c$)$ Your catalog year is the list of courses and$/$or set of requirements that were in effect when you were admitted to your academic program.

d$)$ All of the above.

e$)$ None of the above