For a single phase capacitor start induction motor which

For a single phase capacitor start induction motor which of the following statements is valid ?

1. The capacitor is used for power factor improvement
2. The direction of rotation can be changed by reversing the main winding terminals
3. The direction of rotation cannot be changed
4. The direction of rotation can be changed by interchanging the supply terminals

For changing the direction of rotation, we have to change main winding terminal and direction magnetic flux will be reversed.