Bob has reviewed the external chaining policy, and he's designed a modification of it$,$ which he calls "tree chaining". The idea is that rather than using a LinkedList for the chaining, he uses a BST $($as taught in modules $4$ and $5)$ instead. Alice comes over and sees the merits in the idea, but she cautions that the idea needs to be thought out carefully because it could have unexpected complications in implementation and unintended consequences in efficiency. Which of the following are plausible concerns that Alice might have?