Correct option is (b) <menu>
The best I can explain: <menuitem> represents a command which helps user to pop up through menu. <menu> element in HTML represents group of commands that user can perform or activate. This include list menu as well as context menus. List menus appear across top of a screen and context menus might appear underneath a button after it has been clicked. <summary> element is known as Disclosure Summary element. <details> elment provides information that user can view or hide as per own wish.
