What is the decryption function and the decrypted

Question

Problem

Using the English alphabet (i.e., mod 26 arithmetic) let plaintext = {p₁, p₂, p_n,} and corresponding cipher text = {c₁, c₂, c_n}.

{start A as 1, B as 2 and so on}

Suppose the encryption function is c_i = p_i + 8 (mod 26).

You receive the cipher text message CUCKQAVWECUOK

• What type of cipher is this?

• What is the decryption function, and the decrypted/recovered plaintext, (insert spaces to make readable)?