One Problem with Research Data on Sex Is Social Desirability

One problem with research data on sex is social desirability bias which means

A) there is a tendency for researchers to focus on socially desirable respondents.
B) there is a tendency for subjects to give researchers socially desirable responses.
C) there is a tendency to only ask questions about socially desirable behaviors.
D) there is a tendency for subjects to only answer questions asked by interviewers of the same sex.