Have you ever seen a picture of someone and found them very attractive only to find out later they were the same sex as you?
Your reaction was...
Why do some people find it so difficult to separate "Finds attractive" from "Wants to have sex with?" I find lots of women attractive, but know what's in their underwear precludes any sexual interest on my part.
There are plenty of reasons why you might not want to have sex with someone you find attractive. Genital incompatibility is only one of them. So why make such a big deal out of it?
I guess E, although I wouldn't say so much neutral (which would suggest no reaction either way) so much as interested - I find both/all genders attractive because it is based largely on the person themself (although physical traits do attract me as well, ultimately it's about who that person is) so if I find a person attractive, and I think that person is male, and I find out later that person is female, I would react (therefore not really 'neutral' but my reaction would be neither negative nor positive, just one of interest as in "Oh, that's something I didn't realize about that person before"