Which hormone is correctly matched with its source and primary satiety/hunger role?

• A. Ghrelin — stomach; increases appetite (hunger), especially during fasting.
• B. Insulin — stomach endocrine cells; primary long-term adiposity signal equivalent to leptin.
• C. Leptin — pancreas; secreted after meals to stimulate short-term satiety signals from the intestine.
• D. CCK — adipose tissue; increases long-term appetite and promotes weight gain.

Answer: (A)