In a study examining the effects of a new diet on weight loss, participants lost an average of 0.5 pounds over 6 months with a p-value of 0.04. How should these results be interpreted?

The results have a large effect size and are of great practical significance.

The results are statistically significant but of questionable practical significance.

The results are not statistically significant and have no practical significance.

The results are not statistically significant but have a large practical significance.