Check My Work Marriott hotels offer customers free breakfasts, free coffee in the room, free WiFi, and a rewards program for customers who earn points towards a free-night's stay. Other featured amenities include express check-out, dry cleaning/laundry services, free self- parking, and a 24-hour front desk. The basic product is a hotel room, but services are added _______. a. to allow Mariott to charge high room rates b. to differentiate Mariott from the competition c. to reduce the number of customer service employees d. to attract high-maintenance customers