单选题：After inserting 0 into the 2-3 tree given in the figure, how man

After inserting 0 into the 2-3 tree given in the figure, how many of the following statements are FALSE? @[B](2)

(S1) The tree grows higher;

(S2) 2 and 4 are in the same interior node;

(S3) the root node still contains 9 only;

(S4) the interior node containing 12 keeps unchanged.

A. 0
B. 1
C. 2
D. 3






A.0
B.1
C.2
D.3


答案：B