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If a refinery achieves a reduction in cost by purchasing ...

If a refinery achieves a reduction in cost by purchasing and transporting crude oil in large quantities, it enjoys

A.

Economies of scale

B.

Specialization

C.

Division of labour

D.

Diseconomies of scale

Correct answer is A

Economies of scale is a proportionate saving in costs gained by an increased level of production. This means that, a firm begin to enjoy certain benefits such as a reduction in its direct and overhead cost as its scale of transaction and operation expands.