You made changes to the COMPUTE_TAX function inside the EMP_ADMIN package body.  Whichstatement is true after you recompile the EMP_ADMIN package body（）

• A、The USE_P procedure remains valid.
• B、The USE_P procedure becomes invalid.
• C、The SHOW_DETAIL procedure becomes invalid.
• D、The EMP_ADMIN package specification becomes invalid and needs to be recompiled