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

A. Following at the man’s heels was a big native dog.

B. The animal understood and was worried by the great cold and knew that this was no time for travelling.

C. Having understood the danger of being out there in the cold better than the man, it started barking.

D. It was a wolf dog, gray-coated and not noticeably different from the wild wolf.