Suppose That Wilma's Utility Function Is Given by U(E)= 100

Suppose that Wilma's utility function is given by U(E) = 100 - 2E²,
Where E = Wilma's work effort in producing homemade dinners,measured in hours per day.If Wilma is forced to work an 8-hour day producing homemade dinners,her total utility will be:

A) 100.
B) -28.
C) -128.
D) 228.
E) none of the above.