有个485的填表问题想请问一下，对副申请人，part2应该填A还是B？
I am applying for an adjustment to permanent resident status because:
A. an immigrant petition giving me an immediatedly available immigrant visa
number that has been approved.
B. My spouse or parent applied for adjustment of status or was granted lawful
permanent residence in an immigrant visa category that allows derivative status
for spouse and children.
我认为应该填B可是律师填的是A，请问过来人到底应该是哪一个呢？
谢谢！