If there is only one variable input, diminishing marginal returns first occur with the production of which unit of output?

$$

$7$th

$$

$6$th

Correct Answer

$$

$5$th

$$

$4$th

$$

$3$rd

greater than or equal to total cost.

greater than or equal to average total cost.

Correct Answer

greater than or equal to average variable cost.

greater than or equal to average fixed cost.

less than average total cost.