How would I work through this problem?

While doing research for a history assignment, you read a December 2007 Gallup Poll that claimed 43% of all Americans use the internet for an hour or more each day. You believe that the proportion of Americans who use the internet for an hour or more each day has increased since then, especially among students at HCC. To investigate if your belief is substantiated, you decide to conduct a significance test.

Later that night you have a dream where a kind statistics teacher helps you obtain a simple random sample of 90 HCC students for your hypothesis test. In this dream, 68 of the 90 HCC students said they did use the internet for an hour or more each day. So in this dream situation, what are the characteristics of the sampling distribution that should be used for conducting the significance test?

(A) mu = 0.43, approximately Normal, sigma = 0.052

(B) mu = 0.43, approximately Normal, sigma = 0.045