The Data Below Are from an Experiment That Tested the Effect

Multiple Choice

The data below are from an experiment that tested the effect of leptin on mice with a normal obese gene and mice with a defective obese gene. Assume that the experiment began with a group of mutant mice that were all the same mass, and a group of normal mice of the same mass.
-What conclusion is supported by the data?

A) Obesity can be caused by a defective obese gene.
B) Saline causes mice to lose weight.
C) A normal obese gene does not produce leptin.
D) Leptin does not affect a mouse's weight.