I'm in the middle of writing a fanfic (no guarantee that I'll ever finish it) and I came across a language problem.

For example
Clark says, "I'm a strange visitor from another planet."

1. Lois isn't sure she heard him properly. Does she say
a) Pardon?
b) Pardon me?
c) Sorry?
d) Excuse me?

2. Does this matter if you're from Canada, the US, England or wherever they speak English?

gerry