What is the difference between a MenuItem and a CheckboxMenuItem?
1) A MenuItem is a simple menu item without a checkbox, while a CheckboxMenuItem is a menu item with a checkbox.
2) A MenuItem is used for selecting options from a menu, while a CheckboxMenuItem is used for selecting multiple options from a menu.
3) A MenuItem is a menu item that can be checked or unchecked, while a CheckboxMenuItem is a menu item that can only be checked.
4) A MenuItem is a menu item that can only be checked, while a CheckboxMenuItem is a menu item that can be checked or unchecked.
