Four boxes of presents were wrapped up and placed on the table. Sue was told that they contained a toy car, a bell, a toy house and a basketball. Sue wanted the bell. What can she do to help her choose the correct box?
选项：

A:Smell each box.
B:Knock on each box.
C: Shake each box and listen to the sound produced.
D:Throw each box into a trough of water.