In Hong Kong,the Commitment Mechanism That Was Implemented Dealt with

In Hong Kong,the commitment mechanism that was implemented dealt with

A) lowering interest rates by implementing expansionary monetary policy.
B) appreciating its domestic currency by lowering interest rates.
C) improving its trade balance by raising the value of its domestic currency.
D) targeting the unemployment rate problem by expanding government spending.
E) reducing inflation by implementing a fixed exchange rate enforced by a currency board.