Which of the following events occur while the merge operation is running? There are 2 correct answers to this question.
A . The content of the first main storage and the committed entries in the first delta storage are merged into the new second main storage.
B . The content of the complete main storage is persisted to disk.
C . Uncommitted changes in the first delta storage are rolled back.
D . All write operations go to the second delta storage.
Answer: B,D