There are several things attracting me to the new job,( ) the most important is no doubt the chances

题目

There are several things attracting me to the new job,( ) the most important is no doubt the chances to get promoted.
A.of which B.from which C.in which D.for which
选什么?做这一类型的题目时的方法是什么?

答案

​A
There are several things attracting me to the new job,of which the most important is no doubt the chances to get promoted.
释义为：新工作有一些东西吸引我,其中最重要的毫无疑问是升职的机会