问题如下：
3. Based upon Observation 2, Country C is most likely to have:
选项：
A. relatively low real asset returns.
B. a relatively low real interest rate.
C. a relatively high real interest rate.
解释：
C is correct.
A high growth rate of potential GDP would cause real incomes to rise more rapidly and also translate into higher real interest rates and higher expected/required real asset returns. The real interest rate is essentially the real return that consumers/savers demand in exchange for postponing consumption. Faster growth in potential GDP means that consumers expect their real income to rise more rapidly. This implies that an extra unit of future income/consumption is less valuable than it would be if income were expected to grow more slowly. All else the same, the real interest rate will have to be relatively high in order to induce the savings required to fund required/desired capital accumulation.
考点：Growth in potential GDP
解析：国家C现在正努力发展生产，提高潜在GDP水平。一国潜在GDP水平提高后，国民就会预期自己的收入将要增加。那么这时候人们就倾向于去更多地消费而不是储蓄。为了吸引一国居民储蓄，只能给与其更多的补偿，这就表现为更高的利率水平。所以C过的利率水平应该上升。
这是哪个知识点呢？有点模糊？
