Which is the most efficient summarization that R1 can use to advertise its networks to R2? admin 8 years ago Refer to the exhibit. Which is the most efficient summarization that R1 can use to advertise its networks to R2? A.172.1.4.0/22 B. 172.1.0.0/21 C. 172.1.0.0/22 D. 172.1.4.0/25 ← Previous question Next question →