Detective Jones Sent a Memorandum to His Supervisor Stating That

Detective Jones sent a memorandum to his supervisor stating that he believed that a detective on his drug investigation task force had tipped the target of the investigation off about an impending drug bust. Jones was subsequently demoted and transferred. He filed suit claiming his First Amendment rights were violated. The most likely outcome is that:

A) his claim will fail because the memorandum was written pursuant to his official duties.
B) his claim will fail because the police officers have no First Amendment protection got speech that occurs while on duty.
C) his claim will fail because the subject Jones addressed was of no interest to individuals outside the department.
D) his claim will succeed because his interest in disclosing serious misconduct by a fellow officer outweighed the department's interest in suppressing the speech to avoid a disturbance in the workplace.