14. Consider the concept of strong-monotonicity. A preference relation displays strong-monotonicity if for each bundle, 0, every bundle b, with at least as much of each good in the bundle and strictly more of at least one good is strictly preferred. In other words, monotonicity implies bundles with more of everything are preferred. Strong-monotonicify implies bundles with at least as much of everything (and more of at least one good] are preferred. Which of the following utility functions IS consistent with strong-monotonicity but and IS consistent with monotonicity? X is the amount of Good 1 consumed and Y is the amount of Good 2. Assume X and Y can only take positive values. A. UlX,Y)=-XY B. U(X,Y)=2X C. U(X,Y)=mux(X,Y) D. U(X,Y)=mln(X,Y) E. None of the above