A car of mass 800 kg is travelling at a speed of 40 km/h on a straight road. A force of 1000 N is applied on it in the direction of its velocity for 12 s. Which one among the following is the final speed of the car?

 (a) 55 km/h

(b) 60 km/h
(c) 94 km/h
(d) 104 km/h