(i)The papers which are required to be preserved permanently shall be marked 'A' and kept in file 'A'.(ii)The papers which are required to be preserved for 30 years shall be marked 'B' and kept in file 'B'.(iii)The papers which are required to be preserved for 5 years shall be marked 'C' and kept in file 'C'.(iv)The papers which are required to be preserved for 1 year shall be marked 'D' and kept in file 'D'.
