Infrastructure covers physical facilities like airports, power plants and hospitals (I). Commercial sources of energy refer to coal, petroleum and electricity (IV) which are sold at a price. Indian System of Medicine refers to AYUSH (II) - Ayurveda, Yoga, Unani, Siddha and Homeopathy. Non-Commercial sources of energy include firewood and agricultural waste (III) which are freely available. Hence matching is A-I, B-IV, C-II, D-III.