Language/Writing Question and a Poll

Okay, first off - my apologies for anyone who tracks my posts. For the record, LJ sucks at polls. So here we go again:

I've got a feeling this is a dumb question - but I can't find the answer anywhere.

Poll #10901 I've got an id complex

Open to: Registered Users, detailed results viewable to: All, participants: 42

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How do you spell and capitalize the short version of "identification" (as in, "can I see some ___, ma'am")

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ID
37 (90.2%)

id
2 (4.9%)

i.d.
1 (2.4%)

Other, as I'll explain in great detail in my comments
1 (2.4%)

Ticky Ticky Option

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Puppehs
15 (37.5%)

Kittehs
21 (52.5%)

Bunnehs
11 (27.5%)

Matt Bomer's waxed and naked ass
25 (62.5%)