A Biology Department at a University Recently Received a Large

A biology department at a university recently received a large donation from a chemical company after agreeing to research the effects of an Alzheimer's drug recently developed by the company. After the research study was completed, other universities asserted that the study was biased due to the donation from the company. As proof of the unbiased nature of the study, the department president asserted that they did not receive funds from the company until after the study was completed.
Which of the following, if true, would most strengthen the position of the department president?

A) Researchers in the study were not told of the possible donation until after the study was completed.
B) Researchers in the study had previously worked for the chemical company making the donation.
C) Another university conducted an independent study of the drug in question at the same time of the biology department.
D) Claims of bias are common whenever drug research is funded by a private entity.
E) The donation from the company will be used for new equipment, and not to conduct any studies.