Quote:
I am not convinced by the answer because there is no correlation given about the 50 % decrease relation.
Please elaborate the answer to me again. Thank you.
This question attempts to trick you into drawing unsupported conclusions when really the answer is simple. All the incorrect choices are based on assumptions or information that are not contained in the passage. The only actual facts we have to work with are that sales decreased after the recession, have since doubled, but are still not back to their previous levels. With this information, Choice D is simple arithmetic. If sales have doubled but aren't at their previous level then they must have been halved by the recession.