People Tend to Give More Socially Acceptable Answers When Asked

People tend to give more socially acceptable answers when asked a sensitive question in person rather than anonymously via computer. When computing a 95% confidence interval for a population parameter, what does the margin of error cover?

A) It covers all deviations from the parameter that are due to answer bias.
B) It covers 95% of deviations from the parameter that are due to answer bias.
C) It covers deviations from the parameter that are due to answer bias as long as the sample was a random sample.
D) It does not cover the deviations from the parameter that are due to answer bias.