Your database operates in ARCHIVELOG mode and all the tablespaces are online. Due to a user error， you decided to perform an incomplete recovery. Which two tasks would you be required to perform in the recovery process？（）

A. open the database with the RESTRICTED option

B. open the database with the RESETLOGS option

C. recover to the required SCN only that data file in which the error occurred

D. recover all the data files to the same system change number （SCN）