一国政府希望能够为国民提供廉价住房。为了刺激这类住房的建设，政府允诺在将来不对租金征税。

a．一旦房屋建成。政府还将遵守诺言吗？ b．如果房产商知道政府将不守信用，还有相同的动力去建设这类住房吗？ c．政府应推行的最佳政策是什么？什么是时间一致性政策？ (注意：还需要增加一个条件，房产商建设这类住房是用来出租而不是销售一编者注。) Consider a government that wants to provide cheap housing to its population．In order to promote the construction of apartment buildings，the government promises not to impose rent control programs in the future． a． Once the apartment buildings are in place，would the government want to keep its promise not to impose rent controls？ b．If the private sector knows that the government will not keep its promise，would they have the same incentiVe to construct apartment buildings？ c．What is the optimal policy for the government to pursue？What is the time-consistent poliey？