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 A must be:




@[B](3)

A. H
B. B and G
C. C
D. C and G



A.H
B.B and G
C.C
D.C and G


答案：B