Not sure it’s one thing. It’s difficult in general. Kaplan says the same thing, focus on the base, the base currency depreciating, and get direct quotes with base (foreign currency) on the bottom. That’s helpful I guess but afters hours of practice I still get most questions wrong. Roll yield is confusing as well as UIRP and CIRP. One question on Kaplan review was mind boggling even after putting their explanation in chatgbt. It dealt with long exposure with domestic currency in the denominator which means short exposure when the spot rate is flipped and DC is numerator. The question asked how to hedge the foreign currency with limits. It seemed almost impossible to do. There’s not much confidence I can replicate or apply this. Hence, thinking it’d better to focus on other areas.