MtF: In need of feedback on my voice.

[NicholeD]

So I have like 4 different voices. In order: (A)My natural male voice, (B)a very high-pitched almost falsetto voice, (C)a more mellow A#3 voice and (D)the third one while making my throat smaller.

http://vocaroo.com/i/s0dsKleQTDXJ

I'd like to know which of one of these seems like the most viable for trying to pass as a woman. I haven't done surgery or worked with a personal coach or anything like that, just tutorials and guides and stuff. Any feedback would be appreciated. Personally I'm leaning towards around option C or D.

I can hold A and C pretty well, B takes a lot of focus and energy and I can't really last with it, and D is a little tiring, but its more of a problem of just remembering to keep my vocal passage narrow.