Multiple Choice, Single Answer (Core)

Read the text and answer the question.

Attention residents of Maple Grove Apartments: due to high demand on moving days, all residents planning to move in or out on Saturdays must book the service elevator at least 48 hours in advance through the building's online portal. Each booking is limited to a two-hour window, and only one booking per unit is allowed per day. Residents who use the elevator without a booking may be asked to stop and reschedule, and repeated unauthorized use may result in a $50 charge added to the unit's account. Bookings can be cancelled or changed up to 24 hours before the scheduled time at no cost.