Refer to the exhibit.
Company A established BGP sessions with several ISPs. A network engineer at the company must filter out all traffic except for routes that transit AS 152. The engineer configured the filtering policy “permit _152S_(_[0.9])” on R1, but after applying the configuration, the engineer notices that other routes are still visible .
Which action resolves the issue?
A . Option A
B. Option B
C. Option C
D. Option D
Answer: A
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