Which statement about the 3DES algorithm is true? 

Answer options:

A. The 3DES algorithm uses the same key for encryption and decryption,
B. The 3DES algorithm uses a public-private key pair with a public key for encryption and a private key for decryption.
C. The 3DES algorithm is a block cipher.
D. The 3DES algorithm uses a key length of 112 bits.
E. The 3DES algorithm is faster than DES due to the shorter key length.

C