Which of the Following Is a Weakness of Self-Report Surveys

Which of the following is a weakness of self-report surveys?

A) They offer very limited information about the social backgrounds of respondents (e.g. family factors, peer influences) .
B) They tend to focus only on serious offenses.
C) They are often given in schools, so individuals not attending school (e.g. truants, dropouts) are excluded.
D) All of the above.