The Trade - Weighted Index of Major Currencies Is an Index

The trade - weighted index of major currencies is an index based on currencies of

A) the United States, Europe, Japan and the United Kingdom.
B) the United States, Europe, Australia, Canada, Japan, Sweden, Switzerland and the United Kingdom.
C) Europe, Sweden, Switzerland and the United Kingdom.
D) Europe, Australia, Canada, Japan, Sweden, Switzerland and the United Kingdom.