12 a) The Purchasing Power Parity (PPP) implies that the changes in two countries' price levels affect the exchange rate. Under PPP there is the absolute and relative versions of the parity condition. Which version is more useful? Why? (3 marks) b) Many public companies pay dividends, but there are various factors that influence a company's dividend policy. Indeed, a public company will pay dividends, but at the same time seek to maintain their dividend policy. Critically discuss