Which of the following, if true, most weakens the conclusion of the educational experts? A. Some teachers express that financial compensation is not the only factor contributing to job satisfaction and teaching performance. B. School districts will develop their own unique compensation structures that may differ greatly from those of other school districts. C. Upon leaving the teaching profession, many young teachers cite a lack of opportunity for more rapid financial advancement as a primary factor in the decision to change careers. D. A merit-based system that bases compensation on teacher performance reduces collaboration, which is an integral component of quality instruction. E. In school districts that have implemented pay-for-performance compensation structures, standardized test scores have dramatically increased.