Sir i am stuck for this Question

Q9 4 Points Suppose there is a seminar class for students with class standing of either freshman, sophomore, or junior and each student is pursuing exactly one of five majors: biology, chemistry, math, physics, or computer science (there are no double-majors). How many students must be enrolled in the class to ensure that at least 5 students all share both a common major and class standing? O 75 O 61 O 41 O 33 O 13 O 40 O None of these