单项选择题
A.(59,48,26,15,19,11,1,5,61,77) B.(5,48,26,15,19,11,1,59,61,77) C.(1,48,26,15,19,11,5,59,61,77) D.(5,48,1,15,19,11,26,59,61,77)
A.前序遍历 B.后序遍历 C.中序遍历 D.按层次遍历
A.A B.B C.C D.D