(**) Marked as incorrect answers on the quiz. Kindly advise as to the correct answer.

Which of the following is true about total factor productivity (TFP)?

it tells us how productive capital and labor are

it is not directly measurable (**)

it is a more general and better measure of productivity than labor productivity (**)

all of the above

none of the above (**)

As firms use more and more of an input, ________.

the marginal product of the input declines (**)

the price of the input may increase

the marginal product ofotherinputs tends to increase (**)

all of the above

none of the above (**)