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A product line is defined as

Select one:

a$.$ a group of closely related products that are considered a unit because of marketing, technical, or end$-$use considerations.

b$.$ a specific group of products that are offered to the market.

c$.$ products that are sold by the same firm or a division of a firm.

d$.$ products that can be designated as a unique offering among the organization's products.

e$.$ products that an organization makes available to consumers.

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