(B) polygraph tests should not be used by employers in the consideration of job applicants 

(C)an inconclusive polygraph test result is sometimes unfairly held against the examinee.

红字到底该怎么理解

Ｂ错在哪里　Ｃ对在哪里

这种结果意味着测试没有表明该测试者诚实与否。如果employer仅凭这种结果就refuse掉那个测试者，那肯定是对测试者的一种不公平哈。：） C的答案。

B的答案看上去也是一个conclusion，但是这个推理不是很严谨，还需要加一些assumption。比如说It  is not very useful for the employers to judge the skills or loyalty of the employees even the polygraph test is judged conclusive. 如果不加的话，很容易被Weaken掉的： The test is very useful for the employers......

仔细理解这道题的题干。

开始说when a polygraph test is judged inconclusive,.this is no reflection on the examinee，之后又说 Rather,such a judgment means that the test has failed to show whether the examinee was truthful or untruthful，而这个judgment 所指的就是rather前面的这个说法。后面又提到了”然而，仍然还是有些人会因这样的test而被refuse。

所以不难看出，这样的一个test对有些applicants是不公平的

这里的rather表示递进吗？

怎样区分rather到底是递进还是转折？