单选题：After inserting 1 into the red-black tree given in the figure, w

After inserting 1 into the red-black tree given in the figure, which node(s) will keep its/their color(s) unchanged? @[B](2)

A. both 3 and 6
B. both 5 and 6
C. 3, 5, and 6
D. 3, 4, 5, and 6






A.both 3 and 6
B.both 5 and 6
C.3, 5, and 6
D.3, 4, 5, and 6


答案：B