Apart from diarrhea, oral rehydration solution has been employed in:: (A) Severe vomiting, (B) Burn cases, (C) Heat stroke, (D) Both (2) and (3)
Answer is D. Non-diarrhea uses of ORS include:

Maintenance of hydration in postsurgical, postburn and post-trauma patients.
Heat stroke.
During changeover from total parenteral nutrition to enteral nutrition.