With Maturity in an Industry, Which Challenge Becomes Critical for a Firm

With maturity in an industry, which challenge becomes critical for a firm?

A) To adapt its internal organization to the new requirements of this stage
B) To decrease average cost per unit, at least in line with competitors
C) To be able to prepare its shift to another industry or to launch a new line of products in the same industry
D) To adapt its strategy to the constraints described in the industry life cycle