Apple's IPod Sold More Than 50 Million Units Annually Until

Multiple Choice

Apple's iPod sold more than 50 million units annually until 2010 when the iPhone integrated a music player.Since 2010 sales have been declining dramatically and in October 2014 Apple announced that it was discontinuing the iPod classic.Today Apple still sells three iPod product lines although declining sales and discontinued products suggest that this SBU is may have become a

A) question mark.
B) star.
C) hedgehog.
D) cash cow.
E) dog.