In the treatment of Canadif, in a given year, gross investment was $120 billion and net investment was $65 billion, then the country's capital stock in that year: Multiple Choice may have either increased or decreased increased by $55 billion decreased by $55 billion increased by $65 billion decreased by $65 billionan exports and imports, national income accountants: Multiple Choice subtract exports, but add imports, in calculating GDP add both exports and imports in calculating GDP add exports, but subtract imports, in calculating GDP subtract both exports and imports in calculating GDP add exports and ignore imports in calculating GDP