Where can a person purchase grapes?
Options:
- field
- food store
- wine country
- lunch box
- vending machine
Please answer and provide answer explanation.

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
Food store is a shop that sells various kinds of foods. Grapes is a kind of food. The final answer: food store.