Use reasoning to lead to the answer of the following question:
Where can you buy copy paper, pens and desks?
Options:
- computer printer
- artist's studio
- office supply store
- classroom
- supermarket
 Reasoning process:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Stores are shops from where one can purchase various things. Office supplies include things like copy paper, pen and desks. One can buy office supplies from an office supply store. Therefore, the final answer is office supply store.