单选题What is a route filter?（）A a list of prefixes that can be configured in a policyB a single prefix that is configured separately, and can be referenced in a policyC a list of prefixes that is configured separately and can be referenced in a policyD a si
题目
单选题
What is a route filter?（）
A
a list of prefixes that can be configured in a policy
B
a single prefix that is configured separately, and can be referenced in a policy
C
a list of prefixes that is configured separately and can be referenced in a policy
D
a single prefix that can be configured within a policy