Question: Who is one 20th century Greek composers that has had an impact on modern classical music?

Is "In the 20th century, Greek composers have had a significant impact on the development of avant garde and modern classical music, with figures such as Iannis Xenakis, Nikos Skalkottas, and Dimitri Mitropoulos achieving international prominence." the correct answer?
Options: a). yes. b). no.
a).