Which statements are true regarding the concept of problems and incidents in the fault diagnosability infrastructure for Oracle Database 11g？（）  

• A、 Only the incident metadata and dumps are stored in the Automatic Diagnostic Repository （ADR）.
• B、 The problem key is the same as the incident number.
• C、 The database sends an incident alert to the Oracle Enterprise Manager Database Home page.
• D、 Every problem has a problem key， which is a text string that describes the problem.
• E、 The database makes an entry into the alert log file when problems and incidents occur.