7) A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to construct a 99% confidence interval for u1 - u2 where u1 and u2 represent the mean for the treatment group and the control group respectively

A) -26.7 < μ1 - μ2 < -2.5           B) -1.3 < μ1 - μ2 < 30.9

C) -29.0 < μ1 - μ2 < -0.2           D) -30.5 < μ1 - μ2 < 1.3