The appropriate Government may, without the consent of the person sentenced, commute—

   (a)  a sentence of death, for imprisonment for life;

   (b)  a sentence of imprisonment for life, for imprisonment for a term not less than seven years;

   (c)  a sentence of imprisonment for seven years or more, for imprisonment for a term not less than three years;

   (d)  a sentence of imprisonment for less than seven years, for fine;

   (e)  a sentence of rigorous imprisonment, for simple imprisonment for any term to which that person might have been sentenced.