求助语法题

Unlike most severance packages, which require workers to stay
until the last day scheduled to collect, workers at the automobile
company are eligible for its severance package even if they find
a new job before they are terminated.

A. the last day scheduled to collect, workers at the automobile
company are eligible for its severance package.
B. the last day they are scheduled to collect, workers are
eligible for the automobile company’s severance package
C. their last scheduled day to collect, the automobile company
offers its severance package to workers.
D. their last scheduled day in order to collect, the automobile
company’s severance package is available to workers.
E. the last day that they are scheduled to collect, the automobile
company’s severance package is available to workers.

各位大大，这道题为什么不选E,选D啊~。。。