Question: find out the Ciphertext (C) using Hill Cipher for the plaintext= HELP, where the matrix key=[3 3] [2 5] a. Ciphertext= HIAT b. Ciphertext= ATHI

find out the Ciphertext (C) using Hill Cipher for the plaintext= HELP,

where the matrix key=[3 3]

[2 5]

a.

Ciphertext= HIAT

b.

Ciphertext= ATHI

c.

Ciphertext= TAIH

d.

Other.

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