An aircraft is at rest on the ramp. What must be true for it to start moving?

1. 1Thrust must be equal to drag
2. 2Lift must be greater than weight
3. 3Thrust must be greater than drag
4. 4Weight must be less than drag

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 5: Aerodynamics of Flight — Thrust, page 99