You create a master-detail form. The users need to be able to exit the form quickly, adhering to default transaction processing, regardless of the cursor location. You believe you can achieve this using a Key-Exit trigger. What do you need to do to implement this request? （）

• A、Define a Key-Exit trigger for all the blocks in the form.  
• B、In the Object Navigator, highlight all the items and define a Key-Exit trigger. 
• C、Define a Key-Exit trigger on the primary key item in the master block.
• D、No additional key-trigger definition is necessary.