Which two statements describe the behavior of the server's SQL mode?（）

• A、The server's SQL mode determines how the server should behave when performing data validation check and interpreting different forms of syntax
• B、The server's SQL mode determines whether the server should be read-only or should accept commands such as INSERT and UPDATE
• C、The server's SQL mode can be changed at the session level with a SET SESSION sql_mode="new_value" command
• D、The server's SQL mode, when globally set on a slave server, applies to events sent from the master