To Perform the Test of Significance of Differences Between Two

To perform the test of significance of differences between two percentages,each representing a separate group (sample) ,the first step requires:

A) that the arithmetic difference between the two percentages be translated into a number of standard errors away from the hypothesized value of zero
B) a comparison of the two percentages
C) a computation of z by dividing the difference between the two sample percentages by the standard error of the difference between percents
D) determining whether the null hypothesis is supported or not supported at your chosen level of confidence
E) reviewing the normal curve