Which of the following problems of a permanent fixed bridge, detected at the delivery appointment, can be caused by an inadequate temporary restoration?
1. Hypersensitivity of the abutments that decreases after permanent luting.
2. Exposed gingival margins in an area.
3. Contacts with adjacent teeth that prevent complete seating of the bridge.
4. Need for significant occlusal adjustment

All of the above.

(1) and (3)

(1) (2) (3)

(4) only

(2) and (4)