In which two ways does PIM dense mode function in the network?

It waits to forward multicast traffic until a downstream router requests the traffic.

It utilizes the designated forwarder election to avoid multicast packet loops.

It receives traffic from only one Reverse Path Forwarding interface.

It forwards multicast traffic on all interfaces until a downstream router requests that forwarding stop.

It uses a push method, and fallback occurs when RP information is lost.