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单项选择题

Which action occurs when the BGP route 20.1.0.0/16 is evaluated by the policy expression?()
[editpolicy-options] 
policy-statementreject_10 { 
from{ 
route-filter20.1.0.0/16orlongerM 
} 
then{ 
communityadd 90-1; 
accept 
}} 
policy-statementaccept_20 { 
from{ 
route-filter20.1.0.0/16orlongerM 
} 
then{ 
communityadd 100-1; 
reject; 
} 
} 
community100-1 members 100:1; 
community90-1 members 90:1 
[editprotocols] 
bgp{ 
groupebgp-group { 
neighbor172.16.201.1 { 
export(reject-10 && accept-20); 
}}}

    A.The route is not announced.
    B.The route is announced with 90:1 added.
    C.The route is announced with 100:1 added.
    D.The route is announced with communities 90:1 and 100:1 added.

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