Question

I need help (:

Consider the two groups listed below. Which statement correctly describes the relationship of the two sets if they were mapped?


all eighth grade students
birthdays
The relation (students, birthdays) is a function, but the relation (birthdays, students) is not.
The relation (birthdays, students) is a function, but the relation (students, birthdays) is not.
Both relations (students, birthdays) and (birthdays, students) are functions.
Neither the relation (students, birthdays) nor the relation (birthdays, students) is a function.