主题：关于具体股票的讨论 -- 倥偬飞人

Brokerage houses offer clients a number of different accounts. The most common ones are a cash account, a margin account (frequently called a "cash and margin" account), and an option account (frequently called a "cash, margin, and option" account). Basically, these accounts represent different levels of credit and trustworthiness of the account holder as evaluated by the brokerage house