Christopher Messenger rents storage space to college students who go home for the summer but do not want to haul all of their property home and back. The business is profitable during the summer months, but when the storage space is unoccupied in the off-season, Christopher is losing money. What characteristic of service is most likely the source of Christopher's problem?
A) intangibility
B) perishability
C) personalization
D) variability
E) inseparability
Answer: B