Vernon Parked His Gasoline Tanker Truck at Moonbeam Hotel While

Vernon parked his gasoline tanker truck at Moonbeam Hotel while seeking lodging for the night.Moonbeam employees went to the gasoline truck to assist in finding a satisfactory parking place,smelled gasoline,noticed a small drip from the truck,and refused to rent a room to Vernon.Is that action lawful?

A) No,because rooms were available in the hotel.
B) Yes,because the presence of the truck would frighten other guests.
C) No,because the innkeeper cannot discriminate on the basis of social status.
D) Yes,because there is a danger to other guests and the hotel.