Which of the following best described my feeling then

A．My heart ached when I saw him standing in the courtroom.

B．I felt sad at seeing him standing alone in the courtroom.

C．I felt sympathy for him when I saw him standing in the courtroom.

D．I felt depressed at seeing him standing in the courtroom.

（）赋予购买者买入的权利。

A、看涨期权

B、看跌期权

C、美式期权

D、欧式期权