防止压疮及预防肺内感染都可进行的护理措施是（）。

A．定时翻身

B．凡士林纱条覆盖

C．湿纱布覆盖

D．及时吸痰

E．定期按摩皮肤

An analyst gathered the following information about a common stock:
Annual dividend per share$2.10
Risk free rate 7%
Risk premium for this stock4%
If the annual dividend is expected to remain at $2.10, the value of the stock is closest to:（）

A. $19.09.

B. $30.00.

C. $52.50.