Which of the following is$/$are true about a typical modern day sound ranging system? $(1)$ it uses microphones to pick up the sound of gunfire.$(2)$The computation can be performed by a processing unit mounted on a vehicle.$(3)$The audio sensors can be deployed on a quadcopter drone.A$.$ all of the above are true B$.$ Only $($i$)$ is true. C$.$ Only $($ii$)$ s true. D$.$ Only $($iii$)$ is true.