Which of the Following Is a Problematic Design for Tree-Structured

Which of the following is a problematic design for tree-structured menu?

A) menu items are organized in an unusual manner
B) the menu enables a user to move backward or forward as wanted
C) he menu has items for inexperienced users and shortcuts for advanced users
D) a menu has items in a consistent format
E) that the menu enables direct access to root items from the branch end items