单项选择题

A.足大趾末节内侧,距趾甲角0.1寸
B.足大趾末节外侧,距趾甲角0.1寸
C.足二趾末节内侧,距趾甲角0.1寸
D.足二趾末节外侧,距趾甲角0.1寸
E.足小趾末节外侧,距趾甲角0.1寸