NO.PZ2023010401000112
问题如下：
When the spread between 10-year U.S. Treasury yields and the federal funds rate narrows and at the same time the prime rate stays unchanged, this mix of indicators most likely forecasts future economic:选项：
A.growth. B.decline. C.stability.解释：
The narrowing spread of this leading indicator foretells a drop in short-term rates and a fall in economic activity. The prime rate is a lagging indicator and typically moves after the economy turns.
中文解析：
这一领先指标息差的收窄预示着短期利率的下降和经济活动的减少。最优惠利率是一个滞后指标，通常在经济好转后才会变动。
没懂为什么不是a。这个rate变窄不应该是预示经济变好吗
