Why does James Gatz change his name into Jay Gatsby？

Why does James Gatz change his name into Jay Gatsby？
A.He wants to conceal the fact that he was once a bootlegger.
B.Gatsby is a more noble and recognizable surname.
C.Gatsby hates the sound of his original name.
D.He wants to impress Dan Cody， an extremely wealthy retired miner and yacht owner.
正确答案：He wants to impress Dan Cody， an extremely wealthy retired miner and yacht owner.