Refer to the exhibit. Router RT - 1 and router RT - 2 both advertise network 131.25.0.0/16 to router RT - 3 via internal BGP. What is the reason that router RT - 3 chose router RT - 1 as its best path to network 131.25.0.0/16.（）

• A、It has a better router ID
• B、It advertises a lower autonomous system
• C、It advertises t he best AS - path
• D、It advertises the best local preference
• E、It advertises the best origin code
• F、It advertises the best MED