All of the Following Are Examples of Solutions to Coordination

Multiple Choice

All of the following are examples of solutions to coordination problems EXCEPT:

A) drivers in the United Kingdom drive on the left side of the road.
B) international airline pilots all speak English to make international communication easier.
C) peacekeepers separate two armies in a civil war to stop the conflict.
D) all firms producing compact discs use a single compatible format.
E) countries allocate international flight paths to avoid midair collisions.