A decision maker is facing a decision involving two attributes and will be usingthe following formula to obtain multi-attribute utilities:u(x₁,x₂) =k₁u(x₁) +k₂u(x₂) +k₃u(x₁)u(x₂)wherex₁= the level of attribute 1 andx₂= the level of attribute 2. The value of k₁can be obtained by identifying when the decision maker will be indifferent between a lottery which will either result in both attributes being at their best values, or both at their worst values and an option where it is certain that:

A)Attribute 1 will be at its worst value and attribute 2 at its best value

B)Both attributes will be at their worst values

C)Attribute 1 will be at its best value and attribute 2 at its worst value

D)Both attributes will be at their best values