You need to design the Service Broker queues that will be used to submit requests for long-running reports. Your solution must minimize complexity of using the queues by applications. What should you do?（）
- ASpecify one queue for each client application that can submit report requests.
- BSpecify one queue for each of the two report-generation services.
- CSpecify one queue for all long-running report requests.
- DSpecify eight queues：One for each service， and one for each client application.