Use reasoning to lead to the answer of the following question:
You go into a building and see many people going in and out of the entry way. Most going out are carrying plastic bags. Where might you be.
Options:
- park
- house
- office building
- department store
- own home
 Reasoning process:
In department store, many people can be seen going in and out of entry way. Most people going out of department store are carrying plastic bags. Therefore, the final answer is department store.