单选题:Given the shape of a binary tree shown by the figure below. If i
Given the shape of a binary tree shown by the figure below. If its preorder traversal sequence is { E, D, A, F, H, C, B, G }, then the node on the same level of F must be:

@[C](3)
A. C and G
B. B
C. H
D. A and G
A.C and G
B.B
C.H
D.A and G
答案:C

@[C](3)
A. C and G
B. B
C. H
D. A and G
A.C and G
B.B
C.H
D.A and G
答案:C