Match List-I with List-II

List-I	List-II
(A) Constant returns to scale	(I) When a proportional increase in all inputs results in an increase in output by a larger proportion.
(B) Decreasing Returns to Scale	(II) The relationship between inputs used and output produced by the firm.
(C) Increasing Returns to Scale	(III) When a proportional increase in all inputs results in an increase in output by a smaller proportion.
(D) Production function	(IV) When a proportional increase in all inputs results in an increase in output by the same proportion.

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Match List-I with List-II

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Extension of supply occurs due to change in _________

Find the returns to scale for the following Cobb--Douglas production function.

$Q=L^{1/3}K^{3/4}$

Find the correct statements from the following in respect to production:

A. Average Product of Labour ($AP_L$)= Total Product of Labour / Labor.

B. Marginal Product of Labour ($MP_L$)= Change in total Product of Labour / Change in Labour.

C. Addition input gives constant return in increasing return to scale concept.

D. Law of variable proportions say that the marginal product of a factor input initially rises with its employment level, then after certain level it start falling.

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An isoquant ________

A. Represents the same level of output and input.

B. Yield the same maximum possible level of output from the set of all possible combinations of two inputs.

C. Yield different level of output from the set of all possible combinations of two inputs.

D. Is an alternative way of presenting the production function.

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The set of all possible combinations of the two inputs that yield the same maximum possible level of output is called?