The internet boom and subsequent bust of the turn of the

The internet boom and subsequent bust of the turn of the century led to an oversupply of manufacturing facilities for integrated circuits, resulting in fierce competition among manufacturers of computer components like CD-ROMs and video cards. Due to advances in the underlying technology used in video cards, the quality of the average unit has increased dramatically and prices have risen for the past consecutive five years. During the same period, prices of CD-ROMs have remained flat. Since profit margins for both components are approximately the same, we can conclude that video card manufacturers have enjoyed larger profits than CD-ROM manufacturers for the past five years.

Which of the following describes an unsupported assumption made in the passage above?

A) Video card manufacturers have managed to adapt to the oversupply of production better than CD-ROM manufacturers.

B) The demand for CD-ROM components has fallen significantly over the past five years.

C) Five years ago, the price of the average video card was equal to or greater than the price of the average CD-ROM.

D) The advanced technology present in video cards has allowed manufacturers to demand higher profit margins.

E) Video card manufacturers are managed more effectively than CD-ROM manufacturers, resulting in higher returns on assets.


guys, when choosing your answer, please provide explanation as well!

thanks!