In which of the following situations could fluoride supplements be recommended?
1. A 4 year old child with active caries.
2. A child with active caries living where drinking water contains 0.7 ppm.
3. A 75 year old patient with active caries who takes xerostomic medications.
4. A 1 year old toddler living in a nonfluoridated community.

(1) and (3)

(4) only

(1) (2) (3)

All of the above.

(2) and (4)