Jeff Had an Old Cellphone That He Wasn't Using Anymore

Multiple Choice

Jeff had an old cellphone that he wasn't using anymore, but it still worked, so he gave it to his daughter when she got old enough to want a cellphone. However, he lost the charger for it, so he went to the store to buy a new one only to learn that chargers for that older model were no longer available. What is this an example of?

A) scheduled product deletions
B) deceptive marketing
C) tying agreements
D) planned obsolescence