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Answer: **C Lied, B Cheated**

The main premise of this exercise in logic is **only ONE suspect can be a liar**.

If we look at suspects **C** and **D** we can see that they **cannot BOTH be true** because they contradict each other over whether suspect B cheated.

Our first leap of logic then, is to see that: if either suspect C or suspect D **has to be the liar**, then statements **A** and **B** have to be TRUE.

Taking statement A to be TRUE, we can see that suspects B and C did the **same thing**, ie: either they **both cheated**, or **neither cheated**.

The last step is to see that suspect C contradicts our last statement in that he states that suspects B and C did opposite things. This makes **suspect C** the LIAR.

Go To Question 15

Make money from home during lockdown. Average payout is around £200.