ADCEBF
The first sentence describes an observation. Out of the options provided, sentence D presents an example of a company in London issuing stock and is the next sentence. Sentence C comments introduce an analogy with an American company which went through the same "sequence of events”. Sentence E then goes on to describe the fate of Priceline and sentence B mentions how these attributes were shared with Lastminute.com. Sentence F qualifies the comment made in the first sentence by highlighting a difference between the two bubbles. This makes option (c) correct