You have configured a router with an OSPF router ID, but its IP address still reflects the physical interface. Which action can you take to correct the problem in the least disruptive way? 

Answer options:

A. Reload the OSPF process
B. Specify a loopback address
C. Reboot the router
D. Save the router configuration

A

Once an OSPF Router ID selection is done, it remains there even if you remove it or configure another OSPF Router ID. So the least disruptive way is to correct it using the command clear ip ospf process.