Imagine Tom's Annual Salary as an Assistant Store Manager Is

Imagine Tom's annual salary as an assistant store manager is $30,000,he owns a building that rents for $10,000 yearly,and his financial assets generate $1,000 per year in interest.One day,after deciding to be his own boss,he quits his job,evicts his tenants,and uses his financial assets to establish a bicycle repair shop.To run the business,he outlays $15,000 in cash to cover all the costs involved with running the business,and earns revenues of $50,000.Tom should:

A) close his shop and go back to what he was doing before with his time and assets, because it was earning him $6,000 more than he's earning now.
B) keep his shop going because he's earning a healthy $35,000 a year.
C) keep his shop going because he's earning $5,000 more than his salary before.
D) None of these is true.