Why is the method “play the sunset” so effective for Lang?

A、Becauseshelovesthebeautifulsunsetverymuch.;
B、Becauseherfatherlovesthebeautifulsunsetverymuch.;
C、Becauseherhairismuchlikethebeautifulsunset.;
D、Becauseherhairoftenremindsherfatherofthebeautifulsunset,whichbringsconfidencetoher.