Which effect of the passive-interface command on R1 is true?

Which effect of the passive-interface command on R1 is true?

A. It prevents interface Fa0/0 from sending updates.
B. Interface Fa 0/0 operates in RIPv1 mode.
C. It removes the 172.16.0.0 network from all updates on all interfaces on R1.
D. It removes the 172.16.0.0 network from all updates on all interfaces on R1.

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