问题如下：
Among 600 workers, 25 workers plan to retire next year. On a random drawn, what is the probability that select a worker who plans to retire next year?
选项：
A.0.042.
B.0.04.
C.0.002.
解释：
A is correct
我理解题目的意思是，600个工人明年有25人退休。随机抽取的话，选一个人的概率。应该是指在25人里选一个人的概率，1/25=0.04，选B
