Earlier quoted context omitted.
Not the op, but female as well. Guy is a general term most times, but I've known a few women that get offended by it because they aren't male. Dude is also used for both, but a lot of folks don't want to use that in the office. Alternatively, just use person and be safe.
Be safe!!!!!! From what? Being scared of offending someone over the word dude or guys. I can't even imagine the anxiety you must suffer from if you are trying to avoid offending anyone. Hey I'm offended you used the word op. When I was a kid, these kids used to bully me by calling me an Op. Can you refrain was using that word.
Yeah, horrible choice of words on my behalf :)