Final answer:
For Kelly's business, the number of beverages is always a variable factor and the number of coolers is always a fixed factor. The long run is not relevant to Kelly's business, and the decision of how many coolers to rent is a short-run decision based on the expected demand for each day.
Step-by-step explanation:
For Kelly's business, the statement that is correct is B. The number of beverages is always a variable factor and the number of coolers is always a fixed factor.
In Kelly's business, the number of beverages is a variable factor because it depends on the expected demand, which can vary from day to day depending on the local team's opponent. The number of coolers, on the other hand, is a fixed factor because once Kelly has rented them, she cannot change the number until the next day.
Regarding the other statements:
A. The long run is never less than 1 year - this statement is not relevant to Kelly's business.
C. Specifically for this problem, the long run could be described as roughly 24 hours - the long run refers to a period of time during which all factors are variable, so it is not accurate to describe it as roughly 24 hours.
D. Once Kelly has rented the coolers and the supplier has closed the store, Kelly is facing a long-run decision - this statement is not correct because once the coolers are rented, Kelly is not able to change the number until the next day, so it is a short-run decision rather than a long-run decision.
E. Before deciding how many coolers to rent, as long as the supply store is still open, Kelly is facing a long-run decision - this statement is also incorrect because the decision of how many coolers to rent is based on the expected demand for that day, which is a short-run decision since it can vary from day to day.