A group of scientists who have done research on the health effects of

A group of scientists who have done research on the health effects of food irradiation has discovered no evidence challenging its safety. Supporters of food irradiation have cited this research as certain proof that food irradiation is a safe practice.

A flaw in the reasoning of the supporters of food irradiation is that they

(A) assume that the scientists doing the research set out to prove that food irradiation is an unsafe practice

(B) are motivated by a biased interest in proving the practice to be safe

(C) overlook the possibility that objections about safety are not the only possible objections to the practice

(D) neglect to provide detailed information about the evidence used to support the conclusion

(E) use the lack of evidence contradicting a claim as conclusive evidence for that claim.