A product line a graph of products that are closely related because they . . . . . . . . are used together, are sold to the same customer graph, are distributed through the same type of outlets, or fall within a given price range some type of outlets, or fall within a given price range.
A. satisfy a class of needs
B. developed by the same product manager
C. all requires high level of R & D
D. all have the same brand equity
Answer: Option A
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