“(c) that part, determined in accordance with paragraphs c.1 to c.3 of his taxable capital gains contemplated in paragraph c of section 1090, from dispositions of taxable Canadian property each of which was:i. an immovable situated in Québec or an interest in such property or an option in respect thereof; or
ii. any other capital property used in carrying on a business in Canada;
“(c.1) the taxable capital gain of an individual contemplated in section 26 from the disposition of an immovable situated in Québec, an interest in such property or an option in respect thereof, must be included in whole in computing his income earned in Québec;
“(c.2) that part of the taxable capital gain from the disposition of any other capital property used in carrying on a business in Canada by an individual contemplated in section 26 that must be included in computing his income earned in Québec, for the year of the disposition, is that part of such gain that his income for the year from carrying on that business in Canada and attributable in the prescribed manner to an establishment in Québec is of his income for the year from carrying on that business in Canada and attributable in the prescribed manner to all his establishments in Canada;
“(c.3) where the individual contemplated in section 26 has no income from carrying on that business in Canada and attributable in the prescribed manner to an establishment in Canada, for the year in which he disposes of any other capital property used in carrying on that business in Canada, that part of the taxable capital gain from the disposition of such property that must be included in computing his income earned in Québec, for the said year, is that part of such gain that his income from carrying on that business in Canada and attributable to an establishment in Québec, computed in accordance with this Title, for the last preceding year in which he had income from carrying on that business in Canada and attributable in the prescribed manner to an establishment in Canada is of his income, for the said preceding year, from carrying on that business in Canada and attributable in the prescribed manner to all his establishments in Canada.”.