Marginal Product in Happy Days Cement Factory increased rapidly and steadily as they added first 100, then another 100 workers. By the time they got to a total of 225 workers, Marginal Product kept increasing, but at a considerably lower rate. What factor helps explain why Happy Days and most other firms had this drop-off in productivity?

Group of answer choices

All the good workers got hired first, then the lazy people applied.

The total revenue to total cost syndrome.

The Law of Diminishing Marginal Returns.

The Fair Labor Standards Act of 1938.