Which of the following statements are correct?
(A) Electrostatic force is a non-contact force.
(B) Ability to lift things with a magnet is an example of contact force.
(C) Airplane flying through the air is an example of non-contact force.
(D) Gravitational force is a non-contact force.
1
(A) and (D)
2
(B) and (C)
3
(C) and (D)
4
(A) and (B)