While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）

• A、Router#copy tftp flash
• B、Router(config)#restore flash
• C、Router(config)#repair flash
• D、Router#copy flash run
• E、Router>copy start flash
• F、Router#copy start flash