单选题：Which one of the following statements is **TRUE**?

Which one of the following statements is **TRUE**? @[A](2)

A.
may be a leftist heap
B.
may be a leftist heap
C.
may be a leftist heap
D.
may be a skew heap




A.
may be a leftist heap
B.
may be a leftist heap
C.
may be a leftist heap
D.
may be a skew heap


答案：A