求助gre一道数学题,题意懂,但是不会做,

求助gre一道数学题,题意懂,但是不会做,
The company at which Mark is employed has 80 employees,each of whom has a different salary.Mark’s salary of $43,700 is the second-highest salary in the first quartile of the 80 salaries.If the company were to hire 8 new employees at salaries that are less than the lowest of the 80 salaries,what would Mark’s salary be with respect to the quartiles of the 88 salaries at the company,assuming no other changes in the salaries?
a.The fourth-highest salary in the first quartile
b.The highest salary in the first quartile
c.The second-lowest salary in the second quartile
d.The third-lowest salary in the second quartile
e.The fifth-lowest salary in the second quartile
mark位于80人中第一分位的第二高,不应该是80人中第二吗?那么加入把个人应该对他没有什么影响啊