The passing words regarding the CM - US Experimental Trials made the boy sick to his stomach , nearly causing him to throw up whatever he had managed to eat during dinner . How the doctors could treat torture so clinically Ken did not know ; the implications almost prompted him to stay in for the night . Logically , he really should have since he had n't had a moment of peace since two days prior . But Ken still had work to finish .

Question: What may be a fact about Ken ?
Answer: Ken has opened investigations on the trial .Ken is working for the trials .None of the above choices .Ken has been researching the trials .