If a Gallup Poll Surveys a National Sample of 3000

If a Gallup Poll surveys a national sample of 3000 people rather than 1500 people, the margin of error of the sample result would be:

A) the same as for 1500 because the population is the same.
B) less than it would be for 1500 because the sample is now larger.
C) greater than it would be for 1500 because the sample is now larger.
D) either less or greater than it would be for 1500 because it depends on the chance outcome of the sample.
E) either less or greater than it would be for 1500. It's impossible to say, because sample size 3000 is not in the table.