What would you do to resolve this performance issue??

A customer reports a performance problem with DefaultStockService. After checking the customer’s system by running SELECT COUNT(*) FROM {StockLevelHistoryEntry}, you discover that there are hundreds of millions of instances of StockLevelHistoryEntry.

What would you do to resolve this performance issue?? Note: There are 2 correct answers to this question.
A . Delete the content of the StockLevelHistoryEntry table directly from the database to immediately improve performance.
B. Implement a CronJob that will clean the StockLevelHistoryEntry table according to customer business needs.
C. Suggest an improvement by creating a maintenance request for the customer.
D. Run Cleanup Type System in the SAP Commerce Administration Console.

Answer: C,D