68.下列哪一個貨幣政策策略是最依賴一個穩定的貨幣-所得關係？ (A)匯率目標化制度(exchange-rate targeting) (B)貨幣數量目標化制度(monetary targeting) (C)通貨膨脹目標化制度(inflation targeting) (D)無明示目標化制度(implicit nominal anchor)