The interocclusal relationship of the primary second molars
1. does not affect the resultant permanent molar relationship.
2. is normal if there is a flush terminal plane.
3. determines the amount of leeway space.
4. may aid in the prediction of permanent tooth malocclusion.

(2) and (4)

(4) only

All of the above

(1) (2) (3)

(1) and (3)