Consider the Following to Answer the Question(s) Below

Consider the following to answer the question(s) below:
EU (European Union) countries report that 46% of their labour force is female. The United Nations wants to determine if the percentage of females in the Canadian labour force is the same. Representatives from Statistics Canada plan to check a random sample of over 10,000 employment records on file to estimate the percentage of females in the Canadian labour force.
-Suppose that Statistics Canada wants to be 90% confident of estimating the percentage of females in the labour force to within 2% of the true percentage. To do this they would have to

A) decrease the sample size.
B) select the same number of employment records.
C) increase the sample size.
D) increase the margin of error.
E) increase the sampling error.