患者，女，23岁，双侧上2锥形牙，远中各有2mm间隙。

以下各项中会引起远期龈退缩，修复体边缘暴露的是（）

A.龈上洁治

B.牙体预备中破坏结合上皮

C.使用含肾上腺素的排龈线

D.戴暂时冠

E.以上都不是

On July 1, 1982, Ms. Fox deposited $10, 000 in a new account at the annual interest rate of 12 percent compounded monthly. If no additional deposits or withdrawals were made and if interest was credited on the last day of each month, what was the amount of money in the account on September 1, 1982 ？（）

A．$10,200

B．$10,201

C．$11,100

D．$12,100

E．$12,544