The Pinole police department, the Shippensburg Police Department and the Dallas Independent School District Police Department have different internal policy officer goals because __________.

A、they differ with each other in terms of organizational administration
B、they have different numbers of police officers and their educational backgrounds vary greatly
C、the location and size of those police departments and the social security situations they face vary
D、police departments must adhere to state laws in making their own internal policy officer goals