问题如下图：cross border exchange是什么意思
选项：
A. 
B. 
C. 
解释：
NO.PZ2016010802000195 WorlTra Organization (WTO). InternationMonetary Fun(IMF). B is correct. The WTO provis the leganinstitutionfountion of the multinationtrang system anis the only internationorganization thregulates cross-borr tra relations among nations on a globscale. The WTO’s mission is to foster free tra proving a major institutionanregulatory framework of globtra rules. Without suglobtrang rules, toy’s globtransnationcorporations woulharto conceive. 考点 WorlTra Organization (WTO) 解析 WorlTra Organization (WTO) 主要任务就是促进国际贸易的顺利发展。 不太明白 是因为 cross borr 选择的WTO吗exchange 有答案里面又说是两国的汇率？
题目里写的是cross-borr exchange, 这个exchange为什么是跨境商品交换呢？如果理解成跨境货币兑换，不就应该选C了？
老师 这个调节汇率不是应该选IMF吗
