(1D)Where the income disclosed in the application relates to more than one previous year, the additional amount of income-tax payable in respect of the income disclosed for each of the years shall first be calculated in accordance with the provisions of sub-sections (1B) and (1C) and the aggregate of the amount so arrived at in respect of each of the years for which the application has been made under sub-section (1) shall be the additional amount of income-tax payable in respect of the income disclosed in the application.