Diminishing marginal returns occurs when Select one: a. when the opportunity cost the extra output increases b. when the opportunity cost the extra output decreases c. output remains constant as more of variable factor is added to a fixed factor, output initially increases, then peaks before finally declining d. output declines as more of variable factor is added to a fixed factor, output initially increases, then peaks before finally declining

Diminishing marginal returns occurs when

Select one:

a. when the opportunity cost the extra output increases

b. when the opportunity cost the extra output decreases

c. output remains constant as more of variable factor is added to a
fixed factor, output initially increases, then peaks before finally
declining

d. output declines as more of variable factor is added to a fixed
factor, output initially increases, then peaks before finally
declining