You are the security manager for a small retailer engaged in e-commerce. A large part of your sales is transacted through the use of credit and debit cards and you need to store these numbers for use in future transactions.You have determined that the costs of maintaining an encrypted storage capability in order to meet compliance requirements are prohibitive. What other technology can you useinstead to meet those regulatory needs?
选项：

A: Obfuscation
B: Masking
C: Tokenization
D: Hashing