This chapter talks about Disruptive Innovation. This concept, credited to Clayton Christensen, is defined in the text as "commonly used to describe any situation in which a large incumbent company is replaced by a startup". The text then defines two "main types" of disruption. Which two of the following options were identified, in this textbook, as "main types of disruptive innovation"?

Group of answer choices

low$-$end foothold

mainstream foothold

new$-$market foothold

transformational foothold

high$-$end foothold