Characteristics of NextBus Include All of the Following Except

Characteristics of NextBus include all of the following except:

A) The system knows exactly where buses are,but not individuals,which protects the person's privacy.
B) San Francisco bus riders carrying a smartphone or similar device can quickly find out when a bus is likely to arrive at a particular bus stop.
C) The system tracks public transportation buses in real time.
D) The core of the NextBus system is a GPS satellite that can tell the NextBus information center where a bus is at any given time.