《化学药品和生物制品说明书规范细则》指出，药品说明书格式中()按国家药品标准书写

A．药品名称、性状

B．适应证、用法用量

C．规格、贮藏

D．有效期

E．批准文号、生产企业

Which of the following statements regarding exchange-traded derivatives is FALSE Exchangetraded derivatives :()

A. are illiquid and have secondary markets. 

B. are standardized contracts. 

C. often trade in a physical location.