A Population Proportion Is to Be Estimated from the Sample $= 256$

Multiple Choice

A population proportion is to be estimated from the sample described. Approximate the margin of error for the 95% confidence interval. Round your answer to four decimal places, if necessary.
-Sample size $= 256$ , sample proportion $= 0.5$

A) $0.0442$
B) $0.0625$
C) $0.0313$
D) $0.0039$