hese are business statistics multiple choice questions. pls help find an expert in this field to help answer them.

A campus program evenly enrols thousands of undergraduate and graduate students. If a random sample of 4 students is selected from the program to be interviewed about the introduction of a new fast food outlet on the ground floor of the campus building, what is the probability that at least 2 of the students selected are undergraduate students?

a. 0.6875

b. 0.375

c. 0.3125

d. 0.25