Let us stop playing their games..
No matter how much they mutilate their genitals, no matter much much they pump themselves with hormones, no matter how much they cry, scream, and abuse others,
they will always truly be the gender they were born as. Sex is not on a spectrum. It is determined by the chromosomes one is born with.
There is no such thing as "trans-gender" people; only transvestites.
Let's call a spade a spade.
I thought on this too. Unless they strip and show what packages they have how are we to know. I call them 'its'. Cant say he or she because I dont know and somebody will be offended.
2nd choice : gender-confused