How Does the Sales/service System Differ from the Retail System

Multiple Choice

How does the sales/service system differ from the retail system?

A) Sales system sells all types of goods, whereas the retail system sells luxuries.
B) Retail system sells various goods, whereas the sales system sells basic goods and services.
C) They are the same system.
D) Retail system sells smaller goods, whereas the sales system sells larger item in price, like homes.