Because the rules in Workqueue Routing are prioritized, a credit record can only be in ONE credit workqueue at a time. The default catch-all workqueue should always be LAST in priority of the Workqueue Routing section.

• A. To ensure it handles only unmatched cases
• B. It processes fastest
• C. Because rules are prioritized and catch-all should be last
• D. It is optional and often not used

Answer: (C)

When routing rules are ordered, the system checks each rule in sequence and assigns the credit record to the first workqueue whose rule matches. This means only one credit workqueue will ever be chosen for that record. The default catch-all workqueue exists to handle anything that doesn't match any of the preceding rules, so it must be placed last in priority. If it weren't last, it could preempt more specific rules and prevent the record from going to the intended, narrower queue. Other options don’t fit because they don’t capture the need for a single destination based on prioritized matching, or they mischaracterize the catch-all’s role as optional or as merely a speed improvement rather than a fallback for unmatched cases.