Which of the Following Is an Example of Part-Time Self-Employment

Which of the following is an example of part-time self-employment?

A) Tabatha,who works from home for a fashion website for a minimum of 40 hours a week
B) Raul,who works as an intern in a law firm for more than 35 hours a week
C) Dorothy,who works in her small bakery for less than 30 hours a week
D) Joshua,who teaches piano to children for 40 hours a week