a) Define Cross Rate and briefly discuss its usefulness b) you are provided with the following spot exchange rates as they appear today in the foreign currency market desk on KCB . 0.7650 -0.7745/USS MSB TZS. 1,395 - 1,420/US$ SWB TZS. 1,860 - 1,905/ Required: 1. With supporting computations, show whether there exists arbitrage opportunity. ii. If there exist arbitrage opportunity, and assuming that you have TZS. 10 million to invest show how you can exploit the opportunity and the amount of profit (in TZS) that you will make