Which of the following examples indicates a situation where the researcher is MOST likely to have a possible bias regarding his or her work?

A) A researcher, funded by a pharmaceutical company, is testing the clinical effectiveness and safety of a new vaccine.
B) A researcher, funded by a public grant, is testing the clinical effectiveness and safety of a new vaccine.
C) A federally funded researcher is working on developing a genetically engineered microbe to quickly digest oil spills.
D) A privately funded researcher is working on developing a genetically engineered and patented microbe to quickly digest oil spills. If successful, the microbe would be marketed worldwide.