please answer B & C

Look at the enclosed Automotive collision warning system block diagram. a. Write a Brief note on how the System works in your own words. 1. Break it down to many sub systems and identify the subsystem as "hard or soft or firm" real time system. b. c. Estimate the for each sub system Response time, Guess the task execution time Task dead line Task arrival interval time Task is Periodic, aperiodic, or sporadic, Does the subsystem input/output depends on other subsystems? (classify as independent or dependent) Steering Wheel Angle Vehidle Speed Windshield wiper status Audio Warning (radio) Visual Warning Disgnasies Side Radar (Left) Side Radar Video Camera Collision Avoidance Electronic Control Unit 24Ghz 77 GHz Rear Radar System Frontal Radar Anti-lock Braking Electronic Control Unit Data Logger Electronic Control Unit Electronic Control Unit Power Steering Electronic Control Unit Figure Complete "high-end" collision-avoidance system Forward Colision Warning (FCW) systems are based on camera or radar sensors monitoring the road ahead. They provide object recognition and detect relative speeds between a vehicle and objects in the road. If the closing speed represents a risk of an impending collision, drivers can be alerted through a number of warning methods