清肝热、息肝风、平肝阳的药物是（）

A.牛黄

B.夏枯草

C.羚羊角

D.天麻

E.石决明

An analyst does research about well-function financial systems. In a well-functional securities market, if the prices of the assets and contracts reflect all available information related to fundamental values, the financial systems are best described as:（）

A. complete markets.

B. operationally efficiency.

C. informationally efficiency.