Which of the following is an example of triangular arbitrage initiation? group of answer choices buying singapore dollars from a bank (quoted at $.55) that has quoted the south african rand/singapore dollar exchange rate at sar3.00 when the spot rate for the rand is $.20 buying singapore dollars from a bank (quoted at $.55) that has quoted the south african rand (sar)/singapore dollar (s$) exchange rate at sar2.50 when the spot rate for the rand is $.20 buying a currency at one bank's ask and selling at another bank's bid, which is higher than the former bank's ask converting funds to a foreign currency and investing the funds overseas