The purpose of the product life cycle is it serves as a(n) __________.
a) tool for measuring the forces of competition and the companies' break-even point
b) tool that tells the marketing manager if the product market seems to be changing
c) tool that indicates when the product has reached another stage in the cycle, and might require changes in the marketing mix
d) indication of whether price is still greater than expenses for a given product line
Answer: B