If technology increases the amount that each worker can produce at a single firm, what influence will this have on the earnings of the workers at that firm?

a. The wages will stay the same because the total demand and supply will not change because of this one firm.

b. They will increase because the wage will adjust to the new higher marginal productivity.

c. They will decrease because the demand for workers will decline.

d. They will decrease because the demand for workers will increase.