Hardware software is the answer
The argument for the function would be answer "D".
Exhaust Gas Recirculation (EGR) for NOx control
<span>Positive Crankcase Ventilation (PCV) for HC emission control </span>
Evaporative Emissions Control(EVAP)
<span>Catalytic Converter for HC and NOx control</span>
Answer: A keyframe is a location on a timeline which marks the beginning or end of a transition. So for example, you have a movie and it transitions to another scene, keyframes tell it when and where to start the transition then when and where to stop the transition.
