What is the advantage of differential aileron movement?

Question

Question Quiz SPL - Sailplane Pilot License - Principles of Flight (Aeroplane)

QuizVDS · Accepted Answer

The drag of the downwards deflected aileron is lowered and the adverse yaw is smaller

QuizVDS · Answer

The total lift remains constant during aileron deflection

QuizVDS · Answer

The ratio of the drag coefficient to lift coefficient is increased

QuizVDS · Answer

The adverse yaw is higher

Id 630 - SPL - What is the advantage of differential aileron movement?