Within the application MY_APP the following PREVIOUS VALUE expression references the sequence MY_SEQ: PREVIOUS VALUE FOR my_seq After which of the following events will the most recently generated value of MY_SEQ persist so that it can be returned to the active MY_APP application?（）

• A、After a ROLLBACK is issued
• B、After the sequence is altered
• C、After the sequence is dropped
• D、After the current session ends