EAD/AP eFlLE question

There is list of "Country of Birth" (as below) for EAD/AP eFILE form :
CHINA, PEOPLE'S OF REPUBLIC-MANIL
CHINA, PEOPLE'S OF REPUBLIC-INNER
CHINA, PEOPLE'S OF REPUBLIC-OUTER
CHINA, PEOPLE'S OF REPUBLIC-CHINA
CHINA, PEOPLE'S OF REPUBLIC-MANCH

which one should be chosen for people from Mainland China?

Thanks in advance