human
List down the concepts in the following sentence. 

Retail is the sale of goods and services to consumers, in contrast to wholesaling, which is sale to business or institutional customers.
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
No

--- Answer ---
open