In which of the following industries are economies of scale exhausted at relatively low levels of output?

A) Aircraft production.
B) Automobile manufacturing.
C) Concrete mixing.
D) Newspaper printing.

Economies of Scale

The cost advantages that enterprises obtain due to their scale of operation, typically resulting in the reduction of cost per unit.

Aircraft Production

The process and industry involved in designing, manufacturing, and assembling aircraft.

Newspaper Printing

The process of mass-producing copies of a newspaper document, whereby the news and other data are printed onto papers.