Match List-I (City) with List-II (River) and select the correct answer using the code given below the lists

List I | List II
A. Washington DC | 1. River Manzanares
B. Berlin | 2. River Seine
C. Paris | 3. River Spree
D. Madrid | 4. River Potomac

The correct matching is A-4, B-3, C-2, D-1. The source snippet explicitly lists the rivers Seine and Spree alongside Paris and Berlin respectively, and names the River Manzanares (which is the river of Madrid). Washington D.C. is served by the Potomac River (internal geographical knowledge). Therefore the consistent mapping is: Washington D.C. — Potomac (4), Berlin — Spree (3), Paris — Seine (2), Madrid — Manzanares (1), corresponding to option 4 (A-4, B-3, C-2, D-1).