According to the Book, Which of the Following Is an Example

According to the book, which of the following is an example of circumstance motivators?

A) Individuals are laid off, are demoted, or are forced to take reduced pay by their prior employer.
B) People start their own company because they have a passion for their product or service.
C) Women, who are the fastest growing group of small business owners, who want to achieve their dreams.
D) People start their own company because they want to be their own boss.