which box to check?

[weedy30]

I am kind of confused right now while filling the I-485 application. I'm on a B1 visa and got married to my wife which she is an american citizen and filling the I-30 and I-485 right now. In the I-485 they are asking the reason why i am filing for the I-485 and i should check a box
i feel none of them applies to me. which one should i check and why?..thank you!