what do you expect to find in the configuration on R1 and R4?

Refer to the Exhibit.

Based on the exhibit, what do you expect to find in the configuration on R1 and R4?

A.
a policy leaking level 1 routes into level 2

B.
a policy leaking level 2 routes into level 1

C.
a policy setting the attached bit on level 2 routes

D.
a policy setting the attached bit on level 1 routes

Explanation: