The Parma Cryptography Challenges: Level 2, Challenge 1 - The Caesar Cipher

Here's the deal, you crypto-newbie. You think you're smart, but you're just a fancy typist with a fancy title. We've got a challenge for you.

Take this message: "GURPS" and decrypt it using the Caesar Cipher (shift 1 position for each letter). What's the original text?

You have 5 minutes, 3 attempts, and a hint: Click here for the hint if you're stuck.