In section 13 of the Income-tax Act, in sub-section (1), in clause (d), for sub-clause (iii), the following sub-clause shall be substituted and shall be deemed to have been substituted with effect from the 1st day of April, 1999, namely:--
"(iii) any shares in a company, other than--
(A) shares in a public sector company;
(B) shares prescribed as a form or mode of investment under clause (xii) of sub-section (5) of section 11,
are held by the trust or institution af'ter the 30th day of November, 1983:".