Which Is NOT a Major Shortcoming of Self-Reports

Which is NOT a major shortcoming of self-reports?

A) Standardizing the self-report measure results in difficulty in comparing the responses of two different individuals who have completed the self-report.
B) Respondents may give socially desirable answers so the researchers think more positively of them.
C) They are difficult to use with very young children.
D) Language abilities between people of different ages can make interpretation of results difficult.