Researchers wanted to compare the effects of two different diets on the weight gain of mice. They divided 20 mice into two groups: Group A was fed Diet 1, which was high in protein, while Group B received Diet 2, which was high in carbohydrates. After four weeks, the researchers recorded the weight gain of each mouse.
At the end of the experiment, Group A (high protein) had an average weight gain of 10 grams, while Group B (high carbohydrates) had an average weight gain of 5 grams. The researchers noted that all mice were similar in initial weight.
Based on the results, which conclusion can be drawn from this study?