IPAWS allows alerting authorities to write their own message using commercially available software that is Common Alerting Protocol $($CAP$)$ compliant. The message is then delivered to the IPAWS Open Platform for Emergency Networks $($OPEN$)$ where which of the following happens?

A$.$ The message is translated, interpreted and delivered through multiple communication pathways.

B$.$ The sender is authenticated and the message is delivered simultaneously through multiple communication pathways.

C$.$ The message is immediately delivered through multiple communication pathways one at a time.

D$.$ The message is interpreted and then delivered consecutively through multiple pathways.