A search was performed on some binary search tree. Which of the following is a valid search sequence?
(A) 1, 11, 111, 98, 58, 78, 90, 48, 88
(B) 333, 33, 53, 93, 63, 90, 70, 88
(C) 8, 888, 18, 98, 38, 78, 90, 48, 88
(D) 555, 5, 55, 95, 45, 65, 75, 88