Read the passage. Bike lanes are meant to protect cyclists, not to provoke them. Adding bike lanes to South Drive was a way to separate cars and bikes to keep cyclists safe. The two-lane road was dangerous. But the bike lane has made things worse. Now cars are stuck in a single lane. Traffic is a mess, and cars are veering into bike lanes. Bikes are jumping curbs to avoid getting hit by turning cars. Did the city planners lose their tape measures?

Which statement best summarizes a reason in support of the claim that adding a bicycle lane to the two-lane road was poorly planned?

A. Bike lanes are separate from car lanes.
B. The city planners created a two-lane road.
C. Bike lanes have made traffic problems worse.
D. The two-lane road was dangerous for cyclists.