Which of the following statements is least likely to be a tool available to central banks for implementing monetary policy（）

A．Adjusting taxation.

B．Inflation targeting.

C．Managing interest rates.

少腹拘急冷痛，舌苔白，脉沉紧。治疗宜用

A．少腹逐瘀汤

B．脯下逐瘀汤

C．芍药甘草汤

D．暖肝煎

E．茴香橘核丸