Program enforces in writing the credit card

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Assuming a user inputs their credit card number from keyboard to a program. When the program writes the user's credit card number to a file, the program prompts the user to input a password. The program writes the credit card number to the file if and only if the input password is correct. Please explain what kind of access control (discretionary? Mandatory?) the program enforces in writing the credit card number to the file? Why?

Reference no: EM133255589

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