Read the following context and choose the best option to answer the question.
Context: It was " Violence is n't the answer , but it will make me feel better . " It was inspired by my job . Anyway ... we had some nice returning customers , including a visit from some of the people who bought stuff from us the first year .
Question: Why is the narrator so happy with their customers ?
Options: 
- They are very foolish .
 - They are very rich .
 - They are very affluent .
 - They are returning customers .


They are returning customers .