Router R1 sits inside OSPF area 1. Router R2 redistributes an E1 route into OSPF for prefix 2.2.2.0/24, with external metric 20. Router R22 redistributes an E2 route for the same prefix/length, external metric 10. Under what conditions will R1 choose as it s best route the route through R22?（）

• A、R1 will always choose the route through R22.
• B、As long as R1's best internal OSPF cost to reach R22 is less than 10.
• C、As long as R1's best internal OSPF cost to reach R22 is less than 20.
• D、R1 will never choo se the route through R22 if the E1 route through R2 is available.