A teacher has proposed requiring all students in her oversubscribed environmental science course do field work on Saturdays in place of a portion of their homework, claiming that the Saturday requirement will reduce the number of students in the class without making it significantly more demanding. The teacher reasons that the Saturday requirement will motivate many students to transfer into other courses that do not require Saturday work.
Which of the following statements, if true, provides the best evidence that the teacher's reasoning is flawed?
(A) Projected increases in the cost of mass transit will increase the cost to students of traveling to and from their Saturday fieldwork sites.
(B) Students in other science courses do not currently have the option of transferring into the environmental science course.
(C) The amount of research required for the environmental science course currently makes it significantly more time-consuming on weekends than any other science course.
(D) Many students opposing the teacher's plan have indicated that they would rather allow the environmental science course to remain overcrowded than do the Saturday field work.
(E) Twenty percent of the students enrolled in the environmental science course attend the school at which it is taught.