A binary search tree is used to locate the number 43.
Which one of the following probe sequence is not possible?
A. 61, 52, 14, 17, 40, 43
B. 10, 65, 31, 48, 37, 43
C. 81, 61, 52, 14, 41, 43
D. 17, 77, 27, 66, 18, 43