Studying methods are so important for us students (   ) those who have a good studying method can get a higher mark easily , while it is hard for those who don't have a good studying method to get a high mark.

A.that

B.because

本题答案选了B，我感觉A 翻译很通顺啊，学习方法是如此的重要，以至于有好方法的人能轻松获取好成绩，同时 对于那些没有好方法的人很难获取高分。

请老师说说A为什么错了呢？

谢谢您。