Answer:
D. Donny, because his workers are not as busy to start with
Explanation:
Note: The complete question is attached as picture
Based on the information supplied. Both shops use the exact same technology to make doughnuts and have the same number of workers and the same size building. Observation: There are diminishing returns to capital. This means in as much a more capital is added to labor, the marginal products falls.
As there are diminishing returns to capital, Donny will benefit the most as his workers were not as busy to start with.