Which two policies of the foreign exchange trilemma do you find the best choice? Why?

The impossible trinity (also known as the trilemma, the monetary trilemma or the Unholy Trinity) is a concept in international economics and international political economy which states that it is impossible to have all three of the following at the same time:

• a fixed foreign exchange rate

• free capital movement (absence of capital controls)

• an independent monetary policy

usa for instance would be 2-3, china 1-3, singapore 1-2. which model do you believe is most suited to optimize the interests of the citizens the country?