If you were instead told to assume that the population variances are equal, which of the following would be true regarding the magnitude of the test statistic?(1 point)

Select one:a. It would not change because of the balanced study design.b. It would increase because the standard error would decrease.c. It would increase because the standard error would increase.d. It would decrease because the standard error would increase.e. It would decrease because the standard error would decrease.