A researcher studying the influence of a plant's electricity costs ("elec") on total costs ("total"), both measured in thousands of dollars, developed a simple bivariate equation: total = 4.2 + 1.4 elec. The cases are different plants owned by the same company. The following table presents some values from this analysis: Case X Y 1 3.1 5.6 2 2.9 11.3 3 3.3 5.9 4 2.8 11.5 Which value of x produces the largest absolute value residual? O 2.9 O 3.1 O 2.8 O 3.3