I'm(A) an English(B).He is an American(C).错误的为

I'm(A) an English(B).He is an American(C).错误的为
I'm(A) an English(B).He is an American(C).错误的为

I'm(A) an English(B).He is an American(C).错误的为
B
englishman才对,english可以总称英国人：the English 就不指个人了