Are you going there with them －－－－If you go,__________． A I also go B so do I C so I will D

Are you going there with them ? －－－－If you go, so willI ．
sowill I为什么A是错误的，英语中没这种习惯的，根本就是中式英语根据“主将从现”的原则，B也不太准确为了强调如果你去我也去的意思，动词will前置。