Which of the Following Is True of Analyzer and Defender

Which of the following is true of analyzer and defender strategies?

A) Analyzers may initiate some product improvements or line extensions to protect and strengthen their position in existing markets.
B) Defenders may do some product and market development to avoid being leapfrogged by competitors with more advanced products or being left behind in new applications segments.
C) Analyzer and defender strategies are appropriate for units with losses or with very less profitable shares of major segments in a mature industry.
D) Analyzers and defenders can attempt to sustain a competitive advantage in established product-markets through differentiation of their product offering.