1. If residual positions caused by market movement are perfectly hedged, then the only difference between the local return and the hedged return will be attributable to the spot rate. 2. During a period when there is no underlying market movement, the hedged return and perfectly hedged return should be equal 3. If only the initial currency position is hedged and there are residual positions in the following months, hedged returns will not be perfectly hedged. 老师，帮忙分析下上述三句的对错，不太明白
