Which of the below are fundamental forces playing a role in the widening economic inequalities in the U.S., several European countries, and emerging economies? Select all that apply.

A、Theincreaseduseofroboticsviatechnologicalchange.
B、Theclosinggapbetweenhigh-skilledandlow-skilledworkers.
C、Thepoliticalsystem,whichamplifiesthewideninginequalitiescausedbymarketforces.