Give correct answer and explain it

Consider the following five utility functions. G(xy) = -1 / [ min(6x,2y)+1] H(xy) = min(6x,6y) L(x.y) = min(6x,2y) - 10000000000 U(xy) = min (3x, y) Finish W(xy) = min (6x, y) Time le Z(y) = min (x,2y) O Which function or functions do not satisfy monotonicity? Select one or more: O a.L D b. G O C.H O d. z If. None