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？（）

• A、Creating the parse tree of the statement
• B、Writing the modified data blocks to the data files
• C、Writing the modified data to the archived redo log files
• D、Updating the control file to indicate the most recent checkpoint
• E、Updating the data file header to indicate the most recent checkpoint
• F、Reading the blocks to database buffer cache if they are not already there