![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
The J-curve effect refers to the observation that______.
A.
GDP usually decreases before it increases after a currency depreciation
B.
GDP usually decreases before it increases after a currency appreciation
C.
the trade balance usually gets worse before it improves after a currency depreciation
D.
the trade balance usually gets worse before it improves after a currency appreciation