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The correct answer is A.

OBJ-2.8: SHA-256 is the Secure Hash Algorithm with a 256-bit length output. This is one of the most common hash algorithms in use and is employed in many applications and protocols. SHA-256 and other hashing algorithms are used to ensure the data integrity of a file has not been altered. RSA, 3DES, and AES are all encryption algorithms. These algorithms can ensure confidentiality but not integrity.

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