Andrew sells ball pens that have a radium body. this is the most unique feature of his product. andrew charges a premium price for these pens because of this feature. he is using a .

it is d i just took the test

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

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