Three routers running a distance-vector routing protocol lost all power, including the battery backups. When the routers reload, what will happen?

They will share all routes saved in NVRAM prior to the power loss with their directly connected neighbors.
They will multicast hello packets to all other routers in the network to establish neighbor adjacencie
They will send updates that include only directly connected routes to their directly connected neighbor
They will broadcast their full routing table to all routers in the networ

ccna exploration 2 chapter 4 Exam Question And Answers 

Three routers running a distance-vector routing protocol lost all power, including the battery backups. When the routers reload, what will happen?