The users request that [F2], [F3], and [F4] be used to commit, rollback, and exit,respectively. How do you accomplish this?（）
- AAdd the appropriate PL/SQL code for each key.
- BMap the logical keys to the physical keys, then add the appropriate PL/SQL code for each key.
- CCreate an object library to define the key triggers, then reference the object library in the form.
- DThis cannot be accomplished because other function keys provide this functionality by default.