Jing is considering starting a new business selling organic groceries. It would cost her $350,000 a year to rent store space and buy the groceries from a wholesaler, and she would have to quit her current job and give up a $70,000 annual salary. a. What is Jing's opportunity cost of starting the business? b. If Jing can make an accounting profit of $50,000 a year selling the organic groceries, should she start the business?