Context: The central stations here are like shopping centres and seem to be open whenever there are trains running . After much searching we did find a supermarket . Still , supermarkets here seem to have more pet food and alcohol than people food .

Question: Why do the central stations have so many stores to shop at ?
Options:
0. The stations have good food at them so they 've expanded over the years
1. The central stations are known for their delicious groceries and so people prioritize shopping there
2. People do n't want to go to groceries stores anymore and prefer stations for their shopping
3. Many people stop by the central station during their commutes and tend to look for places to buy things so they 're popular spots for that
Answer: 3