The answer for this would be A: Research the company.
A short explanation as to why is below:
<em>Of course I'm not saying don't research the company's goals and values before going to an interview. You should do that to see if you'd be a good fit. You should even research the interviewer to see what exactly you're getting yourself into. </em>
<em>But when you show up to the interview, you should have questions about the company when you get there. Researching about the company too much beforehand won't allow the interviewer to answer any questions you may have because...well... you have none. Interviewers like interaction, and they also like questions. So, as you get to know the company during the interview, continue to offer questions. </em>
Hope this helped you out!
-Namira