Caesar Cipher Uses a Shift of Each Character by a Key

question 24

Multiple Choice

Caesar cipher uses a shift of each character by a key with a value between 1 and 255. An a with a shift equal to 3 becomes a d. For the decrypt method below, select the correct body. Assume the key shift property is accessible to the method.
Public int decrypt(int b) { ________ }

• A) return (b + key);
• B) return (b - key % 26);
• C) return (b - key) % 256);
• D) return (b - key);

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