Which Statement Concerning the Defining of a Target Market Is

Which statement concerning the defining of a target market is correct?

A) A statement of a firm's target market should be as flexible as possible so as to take advantage of growth opportunities.
B) Differences between segments in a differentiation marketing strategy can be ignored.
C) A firm's target market may have to be fine-tuned due to changing demographics and lifestyles.
D) A firm should seek an image as a specialist.