【名词&注释】
脾肾阳虚证(yang deficiency of spleen and kidney)、肾阳虚衰(deficiency of the kidney-yang)
[单选题]附子汤证"身痛"的病机是
A. 表阳受伤,筋脉失养 B. 营气两伤,筋脉失养 C. 阴液耗伤,筋脉失养 D. 肾阳虚衰,寒湿内盛 E. 气血两亏,筋脉失养