Regarding product life cycles, good marketing managers know that: A. all new brands start off in the market introduction stage. B. product life cycles can be extended through product modifications. C. a product must pass through all the product life cycle stages. D. no strategy planning is needed during the sales decline stage. E. a firm should use penetration pricing during market introduction, especially if the cycle is expected to move slowly.

B. product life cycles can be extended through product modifications.

Explanation:

A product life cycle can be defined as the stages or phases that a particular product passes through, from the period it was introduced into the market to the period when it is eventually removed from the market.

Generally, there are four (4) stages in the product-life cycle;

1. Introduction.

2. Growth.

3. Maturity.

4. Decline.

Regarding product life cycles, good marketing managers know that product life cycles can be extended through product modifications.

This ultimately implies that, marketing mix such as price, promotion, place and product can all be changed so as to impact or extend life cycle of a particular product.

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