All senior students in criminal investigation majors have become police officers after graduation. Some police officers are party members, and senior students in criminal investigation majors are not police officers. which of the following can be inferred from this is:. ['Some party members are graduates of a criminal investigation.', 'Some party members are not senior students in a criminal investigation.', 'Some senior students in criminal investigation are party members.', 'Some senior students in criminal investigation are not party members.']