The Comprehensive and Progressive Agreement for Trans - Pacific Partnership (CPTPP) is a trade agreement among various Pacific Rim countries. Which of the following best describes the economic impact of this agreement on its member countries?

A. increases tariffs and trade barmers among member countries
B. It fosters economic growth by reducing lariffs and promoting trade among member countries
C. It focuses solely on reducing non - tariff barmers to trade
D. It establishes a common currency for Pacific Rim countries