A restaurant owner wants to determine the effectiveness of his servers. The owner conducted a survey by asking 30 customers about the servers' effectiveness, on a day when the restaurant had 450 customers. The owner found that 65% of those surveyed were satisfied with the service offered. Assuming a 95% confidence level, which statement holds true? A. As the sample size is too small, the margin of error is 0.203.
B. As the sample size is appropriately large, the margin of error is 0.203.
C. As the sample size is appropriately large, the margin of error is 0.171.