Why Would the Hotel Require a Guest to Provide Appropriate

Why would the hotel require a guest to provide appropriate identification to receive the AARP member rate, the military rate, or the government rate?

A) to prevent resale of discounted rooms to other buyers not eligible for the discounted price
B) to honor those who serve in the military and offer support to the troops
C) to encourage active membership in the American Association of Retired Persons (AARP)
D) to ensure that distinguished government guests are assigned the appropriate costs
E) to limit the number of patrons who receive each type of rate