What Was the Precedent Set by the English Colonization of Ireland

What was the precedent set by the English colonization of Ireland?

A) that a nearby domain was fair game for conquest
B) that Catholics had a perfect right in the name of the church to conquer Protestants
C) that an inferior race could justifiably be brutally repressed
D) that if the Spanish could attempt an attack on the English, the English could respond with an attack on the Irish