I think i would probably (e) bap Lawson for asking such a stupid question.
After all, if you had just irreversibly changed gender, would you want
someone asking you that right away? Then, after spending several hours in
shock, i would probably (d:other) go test the "irreversable" part of this
situation. I dunno how, as the manner of this transformation has yet to be
stated. Failing to find any other alternative, i think i would completely
ignore the possibility of (c) and , uhm....
I have to agree with Lwason on the point that gender in relationships
shouldn't matter, so either (a) or (b), depending on how it works out
later.