Guys, stop trying to decide what Shaolin finds honorable or not, I have news for you, none of the choices is 'honorable.
A-means going wild because the techniques we learned are not on par with theirs, so we have to make up with our raw strenght, high probability to injure someone, remember, in chaos mode, our natural state, we can't control the techniques perfectly.
B-another forbidden technique that the abbott dislike and distrust, the point here is to show that such techniques can be used honorably.
C-vampire skill, that put us right in despicable monster category until we will explain how we learned it, exposing imperial secrets in the process,ohohohohoh.
As I have already wrote, if you wanted so hard to abide to their laws and customs you shouldn't have take this challenge nor petitioned for Xuxian.