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Product life cycle is defined as
a. the average life span of a product.
b. a concept that describes the stages a new product goes through from product concept to commercialization.
c. a concept that describes the stages a product goes through in the marketplace—early growth, accelerated development, maturity, and decline.
d. a concept that describes the stages a product goes through in the marketplace—introduction, growth, maturity, and decline.
e. the amount of time it takes a product innovation to completely diffuse in the marketplace.