When executing a SQL workload, you choose to generate execution plans only, without collecting execution statistics. Which two statements describe the implications of this? （）(Choose two.)

• A、It produces less accurate results of the comparison analysis.
• B、It automatically calls the SQL Tuning Advisor for recommendations.
• C、It shortens the time of execution and reduces the impact on system resources.
• D、Only the changes in the execution plan, and not performance regression, are detected.