An office manager is renting a local hall for an upcoming event. The hall costs ​$160. The food costs ​$18 per person. The office manager is not sure how many people will attend. Which quantity is not a variable quantitylong dashthe cost to rent the hall​, the number of people who will​ attend, or the total cost of the​ food?
A. The number of people who will attend.
B. The cost to rent the hill.
C. The total cost of the food.