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