Clayton Christensen argues that while $\_\_\_\_\_\_\_\_\_\_$ may underperform established products in mainstream markets, they often offer features or capabilities appreciated by some fringe $($usually new$)$ customer group$$like being easier to use, cheaper, smaller, or more versatile. Often, his research suggests, those fringe customers swell in numbers to become the mainstream market, absorbing the newly informed mainstream in the process.

Group of answer choices

A$)$ disruptive innovations

B$)$ incremental innovations

C$)$ lagging innovations

D$)$ acquired innovations

E$)$ throughput technologies