Assertion (A): Somatostatins are produced by the delta cells of pancreatic islets.
Reason (R): Somatostatins inhibits insulin, glucagon and GH.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.