AviationTire Performance - Aeroplanes Performance Class B - Single Engine Take-off and landing performance Q 1 / 5

Which of the following statements is correct?

A reduced flap setting for landing will give a shorter landing distance, as a result of reduced lift and greater load on the wheels
Wheel braking is most effective when the wheels are locked
Landing distance required on a grass runway will be shorter than on tarmac because of the rougher surface
Deployment of lift dumpers will increase the effectiveness of the wheel brakes