An IS auditor recommends that an initial validation control be programmed into a credit card transaction capture application. The initial validation process would MOST likely: 
A、check to ensure that the type of transaction is valid for the card type. 
B、verify the format of the number entered then locate it on the database. 
C、ensure that the transaction entered is within the cardholder's credit limit. 
D、confirm that the card is not shown as lost or stolen on the master file.