(B) I, II, III
Reserved forests cover more than half the total forest land, protected forests cover almost one-third, and unclassed forests make up the remainder — so the order from largest to smallest is I, II, III.
The textbook explicitly states: Reserved forests = more than half; Protected forests = almost one-third; Unclassed forests = the rest (smallest share). Remember these fractions — they are frequently tested in MCQs.