An organization tells applicants for a customer service position that they must be willing to work any day of the week, because the nature of the business makes it impossible to guarantee employees the same days off every week. After being hired, a new employee refuses to work on Saturdays for religious reasons. The HR manager's first course of action should be to:
A. terminate the employee for failure to disclose schedule requirements.
B. establish a new schedule for the employee.
C. determine whether a schedule change can be made for the employee.
D. check with other employees with more seniority if they want Saturdays off first.