The total number of credit hours that remain for a student to earn a degree after s semesters have been completed successfully is given by 130 - 9s.

Which statement is correct?
A.
The remaining credit hours decrease by 130 for each semester completed.

B.
The remaining credit hours increase by 9 for each semester completed.

C.
The remaining credit hours decrease by 9 for each semester completed.

D.
The remaining credit hours increase by 130 for each semester completed.