In Which of the Following Ways Can Crime Mapping Be

In which of the following ways can crime mapping be used to predict future crime patterns?

A) Arrests made with the help of existing information can be used to collect evidence about other criminals and crime gangs.
B) Information can be gathered using geographic information systems to track criminal acts as they occur in time and space.
C) Investigators can collect trace evidence by following cold trails that were deserted due to lack of witnesses.
D) Police departments can use digital maps of their jurisdiction to monitor quality-of-life crimes in residential areas.