Question: When a PIN must be stored for reference purposes, it must be stored in: a. Cleartext form in case the PIN has to be reissued

When a PIN must be stored for reference purposes, it must be stored in:

a. Cleartext form in case the PIN has to be reissued at some stage because the customer has forgotten their PIN

b. Ciphertext form produced only from a reversible encryption algorithm

c. Ciphertext form produced only from an irreversible encryption algorithm

d. Ciphertext form that is a function of the account number

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