Given here are four sentences. The first sentence is in the correct order, while the rest of the sentences are jumbled. Pick the option that gives the correct order.

A. This is so magnificent, and although they are forty million years old, it is completely accessible 

B. for the tourist so you can come on one hour tour and everything is lit up so you can see all the best 

C. bits and the floor is completely flat so that you don’t have to be very strenuous if you are walking.

D. These caves are discovered in 1905 and this is the place where they originally discovered them.