A recently published paper concludes that tenured professors or those on their way to tenure don't enhance student learning as much as full-time lecturers outside the tenure system. Clearly, the difference between professors in the tenure system and other full-time lecturers has to do with the reward system for the former. The criterion for rewarding tenured faculty typically places a greater emphasis on research than teaching.


The above argument is based on doubts on the validity of which of the following statements?
A. A tenured professor is expected to spend greater time on research activities than on teaching.
B. Non-tenured full time lecturers are rewarded more for the research that they do than for their teaching assignments.
C. The universities are bound by the law to continue with their existing reward systems.
D. Generally, a tenured professor is much more experienced than a non-tenured full time lecturer.
E. No non-tenured professor focuses more on the research activities than teaching in order to become tenured.