Mug Shots Operates a Chain of Coffee Shops

Mug Shots operates a chain of coffee shops.The company pays rent of $15,000 per year for each shop.Supplies (napkins,bags,and condiments) are purchased as needed.The managers of each shop are paid a salary of $2,500 per month and all other employees are paid on an hourly basis.The cost of rent relative to the number of customers in a particular shop and relative to the number of customers in the entire chain of shops is which kind of cost,respectively?

A) Variable cost and fixed cost
B) Fixed cost and fixed cost
C) Fixed cost and variable cost
D) Variable cost and variable cost