The correct answer is:
C. Once you graduate you will have a monthly payment of about $255 each month for the next 15 years.
Having a loan amount of $30,000, an interest rate set on 6% and a loan term of 15 years, the monthly payment would be of $253.16. In 180 monthly payments, a total of $45,568.80 would be paid, including a total Interest of $15,568.80.
A student loan usually has an interest rate considerably low and a repayment schedule deferred while the student is studying.