Your boss at Certkiller .com wants you to clarify Oracle 10g. Which two steps are performed the first time any UPDATE statement is issued after the instance is started？（）
- ACreating the parse tree of the statement
- BWriting the modified data blocks to the data files
- CWriting the modified data to the archived redo log files
- DUpdating the control file to indicate the most recent checkpoint
- EUpdating the data file header to indicate the most recent checkpoint
- FReading the blocks to database buffer cache if they are not already there