Computer Networks·DNS, DHCP & NAT·CoreThe phrase DNS propagationA record is changed and someone says the change needs to propagate for 48 hours.What is actually happening?AResolvers are still serving cached copies of the old record until their TTLs expireBThe change is still being copied from one server to the next right across the internetCRoot servers must be updated before the change is visibleDThe registrar must approve the change before it takes effectCheck answer