(b)income by way of long-term capital gains arising from the transfer of units purchased in foreign currency, the income-tax payable shall be the aggregate of-(i)the amount of income-tax calculated on the income in respect of units referred to in clause (a), if any, included in the total income, at the rate of ten per cent.;(ii)the amount of income-tax calculated on the income by way of long-term capital gains referred to in clause (b), if any, included in the total income, at the rate of ten per cent.; and(iii)the amount of income-tax with which the Offshore Fund would have been chargeable had its total income been reduced by the amount of income referred to in clause (a) and clause (b).