Which of the following will be the FOURTH sentence after rearrangement?

Directions : A set of sentences is given, which when properly sequenced, form a coherent paragraph. P is the first sentence of the rearranged paragraph. It is divided up into parts jumbled up in any random order. First rearrange the parts to form a logical and coherent sentence and then arrange the remaining sentences to form a meaningful paragraph and answer the questions. P. on the Arctic ice in Greenland, (A)/in an evocative photo clicked (B)/ankle-deep water on top of a melting ice sheet (C)/sled dogs are seen wading through(D) Q. This means that the climate crisis is accelerating faster than anyone had imagined. R. Scientists have confirmed that such melting events should not have happened until much later in the summer. S. The water that the dogs are seen walking through is melting ice from an ice sheet 1.2 metres thick at the Inglefield Bredning fjord. T. In another recent piece of news, Arctic permafrost in Canada has begun to thaw about 70 years sooner than predicted. U. Scientists claim that this is an indication that the climate is now warmer than at any time in the last 5,000 or more years.