根据保险人的委托，向保险人收取手续费，并在保险人授权的范围内代为办理保险业务的单位和个人是（）。

A．保险公估人

B．保险经纪人

C．保险代理人

D．保险理算人

—She is a credit to her family, for she has a small fortune _____ her credit.

—A credit to her family? Her father has to buy his daily necessities _____. [ ]

A. on; on credit  

B. in; in credit  

C. to; on credit  

D. under; with credit