Although Capital Is a Variable Factor in the Long Run,once

Multiple Choice

Although capital is a variable factor in the long run,once chosen it often becomes a fixed factor for a long time.A profit-maximizing firm must therefore select a method of production that is

A) economically efficient at current factor prices.
B) technologically advanced beyond methods currently used.
C) labour intensive,as labour is always a variable factor.
D) economically efficient at current factor prices and sufficiently flexible to adapt to changing factor prices over time.
E) adaptable to wide ranges of output over time.