Which of the Following Examples Indicates a Situation Where the Researcher

Which of the following examples indicates a situation where the researcher is most likely to have a possible bias regarding his/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.