I don`t think the replies do anything different. I tend to choose `Very well`. I like the roleplay, but I wish it went further allowing you some small conversation. The ability to ask why or say several other things and get a set of optional responses such as `because you settled near us` or `We know you`re up to something bad`, would`ve been good.
Also it`s a bit strange that they get so upset when you denounce them in return as if it`s a shock.