What Should a Federal Judge Do If He or She

What should a federal judge do if he or she is assigned a case that involves an organization of which the judge is a member outside his or her official duties?

A) The judge must recuse himself or herself from the case.
B) The judge must ask the parties on both sides if they object to this judge hearing the case.
C) The judge must officially note on the record his or her affiliation with the organization.
D) The judge must have a secondary judge assigned to the case to avoid the appearance of impropriety.