Please choose the correct answer to the question: A recent scientific study funded by a medical corporation concluded that its product is not as harmful as consumers have reported. Identify a possible problem with this study.

Answer1: Corporate scientists have less training than other scientists. Answer2: The results of the study may be influenced by bias. Answer3: Privately funded science is not verified by other scientists. Answer4: The study cannot be repeated with the same results.

Answer format: answer1/answer2/answer3/answer4