A car is moving rectilinearly on a horizontal path with acceleration `a_(0)`.A person sitting inside the car observes that an insect `S` is crawling up the screen with an acceleration a.If `theta` is the inclination of the wind screen with the horizontal, then the acceleration of the insect.
A. parallel to screen is `a+a_(0) cos theta`
B. along the horizontal is `a_(0)-a cos theta`
C. perpendicular to screen is `a_(0)sin theta`
D. perpendicular to screen is `a_(0) tan theta`
