You decided to change the location of the flash recovery area. You executed the following command： Which statement is true？（）

A. The location can be changed only if the flash recovery area is empty.

B. fter executing the command， all new flash recovery area files will be created in the new location.

C. The command will generate an error because you cannot change the flash recovery area while the database is open.

D. ll the existing files in the flash recovery area will be moved to the new location， and all new Flash Recovery Area files will be created in the new location.