The given plot shows the variation of U, the potential energy of interaction between two particles with the distance separating them r.

1. B and D are equilibrium points

2. C is the point of stable equilibrium

3. The force of interaction between two particles is attractive between points C and D are repulsive between D and E

4. The force of interaction between particles is repulsive between points E and F. Which of the above statement are correct?

• A

  1 and 2

• B

  1 and 4

• C

  2 and 4

• D

  2 and 3