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As a developer for a concert venue's ticketing system, how would you design the seat reservation process to provide customers with immediate confirmation when a seat is successfully booked?
A
Add the seat reservation to a Cloud Tasks queue, which triggers Workflows to process the seat reservation.
B
Publish the seat reservation to a Pub/Sub topic. Configure the backend service to use Eventarc to process the seat reservation on GKE.
C
Upload the seat reservation to a Cloud Storage bucket, which triggers an event to a Cloud Run service that processes the orders.
D
Submit the seat reservation in an HTTP POST request to an Application Load Balancer. Configure the Application Load Balancer to distribute the request to a Compute Engine managed instance group that processes the reservation.
