I've sketched these out, but I'm not sure why any of the sequences couldn not be the sequence of nodes examined.
Extracted text: Suppose that we have numbers between 1 and 1000 in a binary search tree, and we want to search for the number 393. Which of the following sequences could not be the sequence of nodes examined? а. 32, 282, 431, 428, 360, 374, 427, 393. b. 954, 250, 941, 274, 928, 288, 392, 393. с. 955, 232, 941, 270, 942, 275, 393. d. 32, 429, 417, 249, 296, 412, 411, 308, 393. e. 965, 308, 377, 651, 329, 422, 388, 393.