Why is the term 2r(SEM1)(SEM2) not included in the independent samples t-test? A. Because we only use SEM1 in the independent samples t-test B. Because the relationship in an independent samples t-test is assumed to be non-linear C. Because the r is assumed to be 0 in the independent samples t-test D. Because the denominator in the independent samples t-test underestimates the estimated standard error the difference