Suppose a business student is interested in exploring graduate school in the northeast. The student identifies a program of interest and finds the name of $9$ students from that program to interview. In this$$ context, identify what is meant by the a$.$ subject, b$.$ sample, and c$.$ population.

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Part $1$

a$.$ What is the subject in this$$ context?

A$.$

all students enrolled at graduate schools in the northeast

B$.$

each student in the program

C$.$

the graduate schools in which the student is interested

D$.$

the student conducting the interviews