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So let's go through all the possibilities here.

• Option 1: Not possible because both are liars and Dylan is supposed to lie, meaning at least one should tell the truth.

• Option 2: Not possible because Dylan tells the truth. But if he's right he is a liar
• Option 3: Works Bob tells the truth and Dylan lies
• Option 4: Eliminated in the same way as option 2

We're just left with one option with is #3.

Bob is truthful and Dylan is a liar

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So let's go through all the possibilities here.

- Option 1: Not possible because both are liars and Dylan is supposed to lie, meaning at least one should tell the truth.
- Option 2: Not possible because Dylan tells the truth. But if he's right he is a liar
- Option 3: Works Bob tells the truth and Dylan lies
- Option 4: Eliminated in the same way as option 2

We're just left with one option with is #3.

Bob is truthful and Dylan is a liar