帮我翻译一下这道题，题目看不懂

5. In several cities, the government is going ahead with ambitious construction projects despite the high office vacancy rates in those cities. The vacant offices, though available for leasing, unfortunately do not meet the requirements for the facilities needed, such as court houses and laboratories. The government, therefore, is not guilty of any fiscal wastefulness.

Which of the following is an assumption on which the argument above depends?

(A) Adaptation of vacant office space to meet the government’s requirements, if possible, would not make leasing such office space a more cost-effective alternative to new construction.

(B) The government prefers leasing facilities to owning them in cases where the two alternatives are equally cost-effective.

(C) If facilities available for leasing come very close to meeting the government’s requirements for facilities the government needs, the government can relax its own requirements slightly and consider those facilities in compliance.

(D) The government’s construction projects would not on being completed, add to the stock of facilities available for leasing in the cities concerned.（A）

(E) Before embarking on any major construction project, the government is required by law to establish beyond any reasonable doubt that there are no alternatives that are most cost-effective.

原文说政府乱建房办公室，也不管城市房屋空置率很高，便宜的房子政府不愿意租用，政府认为这些便宜的房屋不适合政府工作使用，因而不认为建房是浪费。

问题是：哪个假设情形导致这个说法？

A: 租用空房总是比新建房屋的资金利用率低
B: 当资金利用率相当的情形下，政府偏好租房
C: 当某些物业和距离政府使用需求很接近的情况下，政府可以降低标准尽量考虑租用这些物业
D: 在市场上存在空房可用的情况下，政府建设项目不应当进行
E: 政府的重大建设项目应当通过立法来保障资金利用合理性

意思翻译完了，答案清楚了吧~~