Refer to the exhibit. Which two statements with regards to the OSPF down bit are true? (Choose two.) 

Answer options:

A. The OSPF filter occurs because of OSPF down bit in the step 5 when PE3 redistributes OSPF prefixes onto MP-BGP.
B. The OSPF down bit is set in step 1 when PE1 redistributes OSPF into BGP.
C. The OSPF filter occurs because of the OSPF down bit in step 4 when CE2 advertises OSPF prefixes to CE3.
D. The OSPF down bit is set in step 3 when PE2 redistribute prefixes from MP-BGP into OSPF.E. The OSPF down bit is set in step 2 when PE2 advertises MP-BGP to other MP-iBGP peers.

E