Which statement is true about sulfonylureas?
1) First generation sulfonylureas (like tolbutamide) are more likely to cause hypoglycemia than second generation sulfonylureas (like glipizide)
2) Many patients experience weight loss after starting this class of medications
3) This class of medications should not be administered to patients with kidney impairment
4) Young adults are particularly prone to experiencing hypoglycemia episodes with this agent