Which one of the following taxpayers is most likely to be treated as a resident of Australia for taxation purposes? O a Singapore national working in Australia on a 3 month project O an Australian citizen who has gone to work in Thailand for 3 years, and is undecided as to whether she will return to Australia at the end of this 3-year period O a Japanese sailor whose ship docks in Brisbane for three months. After twelve weeks, the ship sails to Argentina for four months and after that it returns to Japan O an Australian citizen who works for Hilton Hotels International spending six months at each of the company's overseas and domestic hotels before moving on. He was previously based in Paris and is now based in Vancouver.