Happy Christmas!

It has been suggested that Father Christmas uses cards to decide whether children receive good presents or bad ones. Each card has either Naughty or Nice on one side and a good present (e.g. Xbox) or a bad present (e.g. Egg Box) written on the back.

Four of these cards are set out in front of you as shown below.

Which card(s) must you turn over to determine whether the following statement is false?

“If a card has Naughty on one side, then it has a bad present on the other side.”

Answers/questions/discussion in the comments section as usual.

ps Some previous Christmas posts – Flame Colour; Podcasts; Hunting