对于n个元素的关键码序列{k1，k2，…，Kn}，当且仅当满足下列关系时称其为堆。
以下关键码序列中，（ ）不是堆。
以下关键码序列中，（ ）不是堆。A12, 25, 22, 53, 65, 60, 30
B12, 25, 22, 30, 65,60, 53
C65, 60,25, 22, 12, 53, 30
D65,60, 25, 30, 53, 12,22
以下关键码序列中，（ ）不是堆。A12, 25, 22, 53, 65, 60, 30
B12, 25, 22, 30, 65,60, 53
C65, 60,25, 22, 12, 53, 30
D65,60, 25, 30, 53, 12,22