In which two aspects does hot patching differ from conventional patching？（）  

• A、 It consumes more memory compared with conventional patching.
• B、 It can be installed and uninstalled via OPatch unlike conventional patching.
• C、 It takes more time to install or uninstall compared with conventional patching.
• D、 It does not require down time to apply or remove unlike conventional patching.
• E、 It is not persistent across instance startup and shutdown unlike conventional patching.