Use the Given Degree of Confidence and Sample Data to Construct

Multiple Choice

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.
n=56, x=30 ; 95% confidence

A) $0.405 < p < 0.667$
B) $0.425 < p < 0.647$
C) $0.426 < p < 0.646$
D) $0.404 < p < 0.668$