【单选题】Despite the doubts, and despite complaints from shop owners, London's congestion charge—introduced in February 2003—has managed to ease the gridlock in the city centre. Traffic is down by 18%, jams by...
A.
has got much support from shop owners.
B.
has reduced 18% of traffic jams.
C.
asks $14 for entering the city center after 7pm.
D.
demands same charges from drivers in spite of road conditions.