If you wish to determine whether there is evidence that the proportion of items of interest is higher in group 1 than in group 2, the appropriate test to use is

A、 the Z test for the difference between two proportions.;
B、 the F test for the difference between two variances.;
C、the pooled-variance t test for the difference between two proportions.;
D、the F test for the difference between two proportions.