(1)(a)Before making the assessment, reassessment or recomputation under section 279, the Assessing Officer shall, subject to the provisions of section 281, issue a notice to the assessee, along with a copy of the order passed under section 281(3);(b)the notice referred to in clause (a) shall require the assessee to furnish, within such period as may be specified therein, a return of his income or income of any other person in respect of whom he is assessable under this Act during the relevant tax year; and(c)the period specified in the notice referred to in clause (a) shall not exceed three months from the end of the month in which such notice is issued.