A study recruited 1000 people to participate in a weight loss program. Participants are allowed to choose whether they want to go on a vegetarian diet or follow a traditional low-calorie diet that includes some meat. Half of the people choose the vegetarian diet, and half choose to be in the control group and continue to eat meat. The study found that there is greater weight loss in the vegetarian group.Which of the following is correct about the study?A) We can conclude that vegetarian diet helps people lose more weight because this is an experimental study.B) The result of the study is not reliable because there is no control group.C) The result of the study is not reliable because there is no randomization and the confounding variables are not controlled.D) We can not conclude that vegetarian diet helps people lose more weight because the sample size is too small.E) The result of the study is not reliable because there is no randomization and the confounding variables are not controlled.

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