An engine in a car produces a forward force of $100\text{ kN}$ on the vehicle. The combined resistive force acting on the car is $20\text{ kN}$. What is the resultant force on the car?
- A$5.0\text{ kN}$
- B$60\text{ kN}$
- C$80\text{ kN}$
- D$120\text{ kN}$