一般而言，下列筹资方式中，资金成本最低的是( )。

A．发行普通股票

B．发行优先股票

C．长期借款

D．发行债券

One advantage of technical analysis is that it tells the analyst:（）

A. Why investors are buying.

B. When to buy and why investors are buying.

C. When to buy; not why investors are buying.