Which two statement about IPv6 path MTU discovery are true? (Choose two)
A. The discover packets are dropped if there is congestion on the link.
B. the initial path MTU is the same as the MTU of the original node’s link layer interface
C. It can allow fragmentation when the minimum MTU is blow a configured value
D. During the discover process the DF bit is set to 1
E. If the source host receiver an ICMPv6 packet too BIG message from a router it reduces its path MTU
F. IF the destination host receives and ICMPv6 packet too Big message from a router it reduces its path MTU
