The menu at JoeJoe?'s coffee shop consists of a variety of coffee? drinks, pastries, and sandwiches. The marginal product of an additional worker can be defined as the number of customers that can be served by that worker in a given time period. JoeJoe has been employing one? worker, but is considering hiring a second and a third. Explain why the marginal product of the second and third workers might be higher than the first. The marginal product of the second and third workers might be increasing because.

A. Workers of higher quality can be hired, and output will increase at an increasing rate
B. workers can take advantage of existing machinerytake advantage of existing machinery?, and total output will increase.
C. workers can take advantage of existing machinerytake advantage of existing machinery?, and average output will increase.
D. the company can purchase more machinery for the additional? workers, and output will increase at an increasing rate.
E. workers can specialize at a separate taskspecialize at a separate task?, and output will increase at an increasing rate.