单选题：When deleting node 6 from following Leftist Heap, which statemen

When deleting node 6 from following Leftist Heap, which statement is **TRUE** for the resulted priority queue?






A.node 12 is the parent of node 19
B.the height of the priority queue decrease after the deletion
C.node 19 is a leaf
D.the number of leaves keep the same after the deletion


答案：A