答案及解析：[单选题]Which consequence follows as a B-tree becomes higher? B树高度的增加一定伴随着： AEach node has a larger number o

问题：

[单选题]Which consequence follows as a B-tree becomes higher?
B树高度的增加一定伴随着：
AEach node has a larger number of keys 每个节点所存放的关键码数量增加
BEach node has a smaller number of keys 每个节点所存放的关键码数量减少
CSplitting to the root 分裂到根
DSplitting to the leaves 分裂到叶