3 Subject to section 4, remission is granted to Spruce Falls, in respect of each of the 1989 and subsequent taxation years, of an amount equal to the amount, if any, by which
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(b) the aggregate of the income tax that would be payable under Part I of the Act by Spruce Falls for the year and the interest and penalties in respect thereof that would be payable by it under the Act for the year, if subsections 13(4) and (4.1) and section 44 of the Act were to apply to the assignment by Spruce Falls of the Water Power Lease Agreement to Ontario Hydro and the acquisition by Spruce Falls of the Power Rights Agreement as if the Water Power Lease Agreement were a former business property and the Power Rights Agreement were depreciable property acquired as a replacement for that former business property, as those terms are defined for the purposes of the Act, and as if Spruce Falls had elected under subsection 13(4) of the Act as and when required for that subsection to apply with respect to the disposition of the Water Power Lease Agreement and the acquisition of the Power Rights Agreement.