The character mode sales report is stored on the network drive as a .REX. You need to make changes to the report layout. Using the report builder how would you change this file?（）

• A、Open the file using the menu option file->open make the changes and recompile the report. 
• B、Convert the file into .REP file using the report compiler make the changes and convert the file back to a .REX file. 
• C、Execute the R30CONV command to convert the file to a .RDF file, make the changes and convert the file back to a .REX file. 
• D、Choose file -> administration->compile. Convert the file to a .REP file, make the changes and convert the file back to a .REX file. 
• E、Execute the R30CONV command to convert the file to a .REP file, make the changes and convert the file back to a .REX file.