Match List-I with List-II and select the answer using the codes given below the Lists: List-I (Symbol of Element): A. Sm, B. Cs, C. Os, D. Np. List-II (Group of Element): 1. Transition Elements, 2. Alkali Metals, 3. Actinoid Elements, 4. Lanthanoid Elements. Codes: (a) A-4,B-2,C-1,D-3 (b) A-4,B-1,C-2,D-3 (c) A-3,B-1,C-2,D-4 (d) A-3,B-2,C-1,D-4