Pontic design for a porcelain fused to metal bridge should
1. provide for a rigid restoration.
2. allow for complete coverage of the metal by the porcelain.
3. place the porcelain metal joint away from the soft tissues.
4. control thermal conductivity.

(1) and (3)

(1) (2) (3)

(2) and (4)

(4) only

All of the above.