Section 4(a) in The Preference Shares (Regulation Of Dividends) Act, 1960
(a)previous years relevant to such of the three assessment years as immediately precede the assessment year ending on the 31st March, 1961, and in each of which the net result of the computation of profits and gains of the company has not been a loss or where there are only two such years, such two years, or where there is only one such year, such one year; or
