The Only Quantities of Good 1 That Barbie Can Buy

the only quantities of good 1 that Barbie can buy are 1 unit or zero units.For x₁ equal to zero or 1 and for all positive values of x₂, suppose that Barbie's preferences were represented by the utility function (x₁ + 12) (x₂ + 8) .Then if her income were $36, her reservation price for good 1 would be

A) $3.38.
B) $6.77.
C) $1.50.
D) $4.50.
E) $.57.