Answer the following question given this paragraph: 

Some maps have a double compass rose. This allows users to make the corrections between magnetic north and true north. An example is a nautical chart that boaters use to chart their positions at sea ( Figure below ).


Q: Which feature in maps allows users to make corrections between magnetic north and true north?

 Choices:

- inset

- scale

- key

- double compass rose

A:
double compass rose
