A.降低進(jìn)口關(guān)稅,低估本國(guó)貨幣幣值 B.提高進(jìn)口關(guān)稅,低估本國(guó)貨幣幣值 C.提高進(jìn)口關(guān)稅,高估本國(guó)貨幣幣值 D.降低進(jìn)口關(guān)稅,高估本國(guó)貨幣幣值