In order to promote long-term rental of its apartments, ARC

Here is the OA
Explanation: The paradox above is that even though most apartments of ARC Company have been rented for less than 2 years and therefore were not discounted, most residents lived in discounted apartments. This information does not seem surprising if, as stated in Choice B, the average number of people living in apartments rented at discounted prices was greater than the average number of people living in apartments rented at full price. This statement shows that even though fewer apartments were rented at discounted prices than at full prices, it could be true that more people lived in apartments rented at discounted prices than in apartments rented at full prices.

A) The fact that apartments rented at discounted prices are bigger and more expensive does not explain why most people live in ARC apartments rented at discounted prices, even though most ARC apartments were rented at full prices.

B) Correct. This statement best explains the paradox in the argument above.

C) The argument is concerned with full and discounted rent prices; the size of those prices is not relevant.

D) This information, if anything, strengthens the paradox, as it was stated that most apartments were rented for less than two years. If VIP apartments were among those rented for less than two years, then this information is not relevant, as they would not be subject to the discount anyway. If VIP apartments were rented for more than 2 years, then even fewer of the apartments that were rented for more than 2 years are subject to the discount. In this case, it is even more surprising that most people who live in ARC apartments live in apartments rented at discounted prices.

E) This information is not important since it is still true that most apartments are rented at full prices but more people live in apartments rented at discounted prices.