A factory has multiple dormitory areas and workshops, and the employees who live in the A dormitory area are not textile workers. Therefore, some employees who work in the A workshop do not live in the A dormitory area. In order for this reasoning to be true, which of the following must be added as a prerequisite? ['Some weavers do not work in workshop A.', 'Some employees working in workshop A are not textile workers.', 'Some employees living in the A dormitory area work in the A workshop.', 'Some weavers work in workshop A.']