Refer to the exhibit. A new TAC engineer comes to you for advice. The engineer wants to configure RIPv2 - OSPF two - way redistribution while avoiding routing loops. Which two additio ns to the router B1 configuration should the engineer make?（）<br /> <img src="https://nimg.ppkao.com/2018-07/yiyu/2018073016453755241.jpg?sign=6c33acadd8805b52c2525498afcb9b27&t=62d2a08e" />

A、access - list 40 deny 172.16.1.0 0.0.0.255   access - list 40 permit any   router rip   redistribute ospf 100 metric 5   distribute- list 40 out ospf 100

B、ip prefix - list rip_routes permit 172. 16.1.16/25 ge 26 le 28   route - map redis - ospf deny 10   match ip address prefix- list rip_routes   router rip   redistribute ospf 10 route - map redis - ospf subnets

C、ip prefix - list rip - to - ospf permit 10.1.1.8/25 ge 26 le 28   route - map redis - rip deny 20   match i p address prefix - list rip - to - ospf   router ospf 100   redistribute rip route - map redis - rip subnets

D、access - list 15 deny 10.1.1.0 0.0.0.63 access - list 15 permit any   route - map redis - rip deny 10   match ip address 15   route - map redis - rip permit 20   router os pf 100   redistribute rip route - map redis - rip subnets