You Are an Internal Affairs Officer Investigating Corruption in the City

You are an Internal Affairs officer investigating corruption in the city police department. You have been assigned to ride along as a partner to Officer Jones, who has a reputation for being corrupt. Officer Jones has been told that you are a patrol officer who has been transferred from another district within the department.
While on patrol, Officer Jones stops a car for speeding and running a red light. You observe the interaction between Officer Jones and the driver. Jones allows the driver to leave without penalty. When you ask why he gave the driver a break, Jones tells you that the driver turned out to be a fellow police officer. By letting him go without a citation, Jones has demonstrated which type of corruption?

A) graft
B) gratuity
C) abuse of power
D) professional courtesy