As soon as may be after the commencement of this Act, the President shall, by order, determine—
(a) the constituencies into which each State having a Legislative Council shall be divided for the purpose of elections to that Council under each of the sub-clauses (a), (b) and (c) of clause (3) of article 171;
(b) the extent of each constituency; and
(c) the number of seats allotted to each constituency.