There are many who stay away from the self-regimentation of a weekly timetable, and dislike being tied down to a definite program of work. Many able students claim that they work in cycles. When they become interested in a topic they work on it intensively for three or four days at a time. On other days they avoid work completely. 

There are many students who_____.

A．do not like being commanded to study according to a weekly timetable

B.  shrink from the self-discipline required for working to a weekly plan

同义句替换，A、B两项哪个更与原文中画线句意思贴切？

请各位老师们看看，并帮忙给出解释。