A nurse researcher studies the pathophysiology and etiology of obesity. What does the nurse discover is true regarding the "thrifty gene" theory of obesity?
A) Multiple mutations of genes over time have lead to the epidemic.
B) A single gene mutation is responsible for the epidemic.
C) Over time, we have become less efficient in hunting and gathering of food.
D) Over time, we have become efficient in food storage and deposition of fat stores.