(b) the least ofi. the amount of the allowable business investment losses of the taxpayer for the taxpayer’s tenth preceding taxation year,
ii. the amount by which the non-capital loss of the taxpayer for the taxpayer’s tenth preceding taxation year exceeds the aggregate of all amounts relating to that non-capital loss deducted by the taxpayer in computing the taxpayer’s taxable income for the taxation year or for any preceding taxation year or in respect of which the taxpayer has made an election under section 1029.1, as it read for the taxation year in which the non-capital loss was sustained, and
iii. where the taxpayer is a corporation the control of which was acquired by a person or group of persons before the end of the year and after the end of the taxpayer’s tenth preceding taxation year, zero.