If the positive interest rate differential in favor of a foreign monetary center is 4% per year and the foreign currency is at a forward discount of 2% per year, (a)Roughly how much would an interest arbitrageur earn from the purchase of foreign 3 months treasury bills if he or she covered the foreign exchange risk? (b) How much would an interest arbitrageur earn if the foreign currency were at a forward premium of 1% per year? (c) What would happen if the foreign currency were at a forward discount of 6% per year