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 have its/their color(s) changed? @[C](2)

A. only 2
B. both 2 and 4
C. 2, 3, and 4
D. both 3 and 6





A.only 2
B.both 2 and 4
C.2, 3, and 4
D.both 3 and 6


答案：C