I485 form question

[aonflux]

In the I485 form in part 2 http://www.bcis.gov/graphics/formsfee/forms/files/i-485.pdf where it says

"I am applying for adjustment to permanent status because:"

what option must be selected?

Option (a) seems closest what happens during concurrent filing?

Thanks in advance

 

[urch]

write under (h)_____ concurrent filing.

 

[aonflux]

thanks urch