S.80IA: Industrial undertakings-Enterprises engaged in infrastructure development-Does not restrict computation of gross total income-Restricts deduction under any other provision under heading C to extent of deduction claimed under section 80IA-The aggregate deduction under section 80IA and other provisions under heading C of Chapter VI-A do not exceed 100 per cent. of the profits of the business of the assessee, is logical and correct. [S. 4(1), 80AB, 80B(5), 80HHC, 80IA(9), Chap. VI-A.]