I-485 问题。请帮忙！

我是f-1。我的先生是公民。现准备申请绿卡。但-485标有个问题不知道怎么填。

I am applying for an adjustment to permanent resident status because


a. an immigrant petition giving me an immediately available immigrant visa number 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 spouses and children.

c. I entered as K-1 fiance of a U.S. citizen.

d. I was granted asylum or derivative asylum status.

e. I am a native or citizen of Cuba.

f. I am the hu*****and, wife or minor unmarried child of a Cuban.

g. I have continuously resided in the U.S. since before 01/01/1972

H. Other basis of eligibility. Explain.

我请choose A or B 呢？ 请帮忙! 谢谢！