证券投资基金主要的当事人有（）。

A.基金代销商

B.基金投资人

C.基金管理人

D.基金托管人

---How did you find your visit to Qingdao, Joanna?

--- ________________.

A．Oh, wonderful indeed

B．I went there alone

C．First by train and then by ship

D．A guide showed me the way