The demand and supply for Fijian dollars in the foreign exchange market is: Demand = 30,000 - 8,000e Supply = 25,000 + 12,000e where e is the nominal exchange rate expressed as Australian dollars per Fijian dollar. The Fijian dollar is fixed at 0.2 Australian dollars. What operation do Fijian authorities have to undertake to maintain this fixed exchange rate? O Fijian authorities would need to sell 1,000 Fijian dollars in foreign exchange markets. O Fijian authorities would need to buy 1,000 Fijian dollars in foreign exchange markets. O Fijian authorities would need to buy 20,000 Fijian dollars in foreign exchange markets. O Fijian authorities would need to sell 20,000 Fijian dollars in foreign exchange markets. O None of the other answers are correct.In the country of Hogwarts real GDP per-capita is $1,000 and the share of population employed is 0.8. In the country of Voldermort real GDP is $500,000, population is 1,000 and employment is 400. Which of the following statements is correct? O Labour productivity is higher in Hogwarts than in Voldermort O Labour productivity is lower in Hogwarts than in Voldermort. O Total factor productivity is higher in Hogwarts than in Voldermort. O Total factor productivity is lower in Hogwarts than in Voldermort. O Labour productivity is equal in both countries.China has a fixed exchange rate. Its currency is called the yuan. Say that income growth in China will be faster than that in other countries. In order to maintain a fixed exchange rate the Chinese government would need to: O Adopt expansionary fiscal policy. O Sell foreign currency and buy Chinese yuan. O None of the other answers is correct. O Sell Chinese yuan and buy foreign currency. O Adopt contractionary fiscal policy