Correct Answer: CADB

Solution : The second option is the correct choice.

The given sentences are about the train that drove 300 tonnes of gold into secret tunnels, and there is no evidence about it. There is a group of Polish who tried to build the replica, and they have built an armoured waggon so far.

• The first sentence talks about the train that drove 300 tongs of gold, that is, (C). Legend has it that in 1945, the Nazis filled a train with up to 300 tonnes of gold, jewels, and masterpieces and then drove it into secret tunnels in Germany.
• The second sentence talks about the evidence of this train, that is, (A). However, there is no evidence that this train or any such trains ever existed, and searches have been fruitless.
• The third sentence will talk about the group of Polish and the replica of the train, that is, (D): A group of Polish enthusiasts decided to build a full-size replica of this legendary train.
• Now we are left with the fourth sentence , which is (B): The group is building it in a former wood processing factory, and so far, the group has built an armoured waggon that is over 12 metres long.

Hence, the correct order is CADB .