A customer with IPCC Express Standard reports that a script using the Database steps is not working. What is the most likely root cause?（）

• A、The script probably has an error in the DSN configuration.
• B、IPCC Express Standard is not licensed for Database steps.  
• C、The script probably has an error in the query string.  
• D、There is probably an interoperability problem between IPCC Express and the database.