Suppose that you run a house-painting company and currently have 2 workers painting a total of 3 houses per month.If you hire a third worker, 7 houses can be painted per month.If you hire a fourth worker, 11 houses can be painted, and a fifth and sixth worker will increase the number of houses painted to 14 and 16, respectively.Diminishing returns:

Group of answer choices

have not yet set in because output is still increasing.

set in when the sixth worker is hired.

set in when the fourth worker is hired.

set in when the fifth worker is hired.