单选题：Let $$T$$ be a tree created by union-by-size with $$N$$ nodes, t

Let $$T$$ be a tree created by union-by-size with $$N$$ nodes, then the height of $$T$$ can be . @[A](3)
A. at most $$log_2(N)+1$$
B. at least $$log_2(N)+1$$
C. as large as $$N$$
D. anything that is greater than 1




A.at most $$log_2(N)+1$$
B.at least $$log_2(N)+1$$
C.as large as $$N$$
D.anything that is greater than 1


答案：A