Apple iTunes has sold billions of downloads. Without iTunes, the demand for the Apple iPod line of products would be small. Without the musicians, there would be no iTunes. In this situation, a condition of ____ demand exists.

Apple iTunes has sold billions of downloads. Without iTunes, the demand for the Apple iPod line of products would be small. Without the musicians, there would be no iTunes. In this situation, a condition of ____ demand exists.


a. bundled

b. incremental

c. functional

d. developmental

e. joint



Answer: e


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