Help me . Thanks a lot

1) If the Chinese yuan has a floating exchange rate with the US dollar,

1. US multinationals have no economic exposure
2. Chinese exporting firms do not face currency risk
3. Currency risk can lead to economic exposure

2.The lesson learnt from the Rolls Royce case-study is:

1. managers not always good about ascertaining hedging versus speculation
2. hedging with currency derivatives cannot reduce exchange rate risk
3. hedging with currency derivatives is an important corporate decision

3.If international Fisher effect (IFE) holds

1. interest rates will be able to forecast exchange rates
2. real exchange rates will be equal across the two countries
3. inflation rates will be equal across the two countries