Which way to configure a redundant rendezvous point for BIDIR multicast are valid? 

Answer options:

A. phantom RP
B. anycast RP
C. auto RP
D. MSDP

B

Reference: https://www.cisco.com/c/dam/en/us/products/collateral/ios-nx-os-software/multicast-enterprise/prod_white_paper0900aecd80310db2.pdf