Let C(x, y) be x is enrolled in y, where the domain for x is the set of all students at a certain university and the domain for y is the set of all computer science classes being offered at that university. What does C(x, y) represent?A) x is enrolled in y.B) x is a student at a certain university.C) y is a computer science class being offered.D) y is the set of all computer science classes being offered at that university.