What is the most likely reason for the dispartly between the actual network numbers at the branches and the routes in the routing table on Gateway-Router？（）

• A、Branch-Router2 is configured to send both RIPv1 and RIPv2 updates.
• B、Gateway-Router is configured to only receive RIPv2 updates.
• C、Gateway-router is configured to receive only RIPv1 updates.
• D、Branch-Router1 is configured to only send RIPv1 updates.