An assessee acquired a property through a will in F.Y. 2011-12, which was acquired by the previous owner before 1981 and the same property was sold by the assessee in the F.Y. 2013-14. What cost inflation index will be taken by the assessee for computing indexed cost of acquisition, whether it will be 100 (for 1981-82) or it will be 785 (2011-12) ?