Identify potential sources of bias or problems in defining the variables of interest in the following study. Select all that apply.

An article noted that veganism is the key to a better life. The article reports that "eating animal products is bad for you." The study received funding from the Organic Fabulous Foods company.

A There are no vegetarians in this study.

B What does it mean to have a "better life"?

C People who eat animal products may not eat vegetables.

D What are considered "animal products"?

E Organic Food Company funded this study.