Low end personal computers have become commodities, which means they have little or no differences between computers made by different companies. As a result, the following statement$($s$)$ is$/$are true:

Group of answer choices

People are holding on to computers for longer periods of time.

All of the above

Profit margins are minimal so producers look to find the lowest$-$cost manufacturing methods.

Consumers buy cheap computers in an effort to upgrade parts cheaply.

Prices have been rising annually for the last decade.