Applicability of int u/s 234ab after considering relief

I would like to know whether interest u/s A B C is calculated before considering relief U/s  89(1) or after considering it. Presently I have received an intimation on the basis of not considering relief u/s 89(1) for the purpose of calculation of tax liability for the purpose to calculate int. u/s 234 A B and C thus creating a demand.