Edith is the owner and manager of a small coffee shop that employs three workers who use the shop’s one coffee machine to make and serve coffee to paying customers. Business has begun to pick up; lines are getting longer every day in her shop. On a busy morning, she sees her baristas scrambling to take orders, get cups, fill coffee from the coffee machine, add cream and sugar, and serve customers in a timely manner. She figures if she hires three more baristas she’ll be able to sell twice as much coffee. Do you think she's likely to be right? Why or why not?

a. Yes, more workers will increase the supply and make more coffee available for sale.
b. No, the current workers just need better training to work more efficiently.
c. No, more workers will just create more chaos behind the counter as the additional workers still have to wait to fill from the coffee machine.
d. Yes, hiring more workers will mean more customers can be served.