You Read the Results of a Survey That Reports That

You read the results of a survey that reports that two-thirds of Cosmopolitan readers lost weight by "going vegan." You should not give the report of this survey much credence because

A) not everyone in this survey was equally likely to be surveyed.
B) it confuses a correlational relationship with a causal relationship.
C) people who responded to the survey are not likely the same as those who did not.
D) All of the above choices are reasons that the survey results should not be trusted.