Janet Consumes X₁ and X₂ Together in Fixed Proportions

Multiple Choice

Janet consumes x₁ and x₂ together in fixed proportions.She always consumes 2 units of x₁ for every unit x₂.One utility function that describes her preferences is

A) U(x₁, x₂) =2x₁x₂.
B) U(x₁, x₂) =2x₁ = x₂.
C) U(x₁, x₂) =x₁ + 2x₂.
D) U(x₁, x₂) =min{2x₁, x₂}.
E) U(x₁, x₂) =min{x₁, 2x₂}.