_____ is a type of symmetric-key encryption algorithm that transforms a fixed-length block of plaintext (unencrypted text) data into a block of ciphertext (encrypted text) data of the same length.

_____ is a type of symmetric-key encryption algorithm that transforms a fixed-length block of plaintext (unencrypted text) data into a block of ciphertext (encrypted text) data of the same length.

A.
Bit Cipher

B.
Hash Cipher

C.
Block Cipher

D.
Stream Cipher

Explanation:
: