Which Statement About the Regulation of Food Intake Is True

Which statement about the regulation of food intake is true?

A) Levels of leptin increase in response to fasting.
B) Ghrelin and insulin inhibit the activity of AMP-activated protein kinase (AMPK) in the hypothalamus.
C) Increased levels of AMP-activated protein kinase (AMPK) in the hypothalamus inhibit food intake.
D) Leptin stimulates activity of AMP-activated protein kinase (AMPK) in the hypothalamus.
E) Most obese people have higher than normal levels of leptin, suggesting a problem with leptin receptors.