An analyst does research about tradingsessions. Which of the following statements is most accurate to describe the characteristics of a call market（）

A. Dealers who provide securities liquidity engage in proprietary trading.

B. Gathering all trades to the same place at the same time makes it easier for buyers to find sellers and vice versa.

C. A willing buyer and seller can trade at anytime the market is open.

强调个人独立思考，有助于提高受训人员独立分析和解决问题的能力，开发其创造性思维的脱产培训方法是（）

A.演讲法

B.情景模拟法

C.案例研究法

D.行为示范法