whichaddressrangeefficientlysummarizestheroutingtableoftheaddressesforroutermain?() A.172.16.0.0/18B.172.16.0.0/16C.172.16.0.0/20D.172.16.0.0/21

whichaddressrangeefficientlysummarizestheroutingtableoftheaddressesforroutermain?()

A.172.16.0.0/18

B.172.16.0.0/16

C.172.16.0.0/20

D.172.16.0.0/21

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