(2) B is(a) the amount of the rebate that the person would be entitled, if section 378.6 were applied without reference to section 378.16, to claim under section 378.6 in respect of the residential complex or addition, that is determined based on the particular amount of tax, or
(b) the amount of the rebate that the person would be entitled, if section 378.14 were applied without reference to section 378.16, to claim under section 378.14, that is determined based on the rebate to which the person is entitled under paragraph d of subsection 1 of section 236.4 of the Excise Tax Act (R.S.C. 1985, c. E-15); and