Suppose Your Utility from Consuming X and Y Is Expressed

Multiple Choice

Suppose your utility from consuming X and Y is expressed as u(X,Y) = ln(XY) where ln() is the natural logarithm operator. Given this information, which of the following statements is NOT true?

A) The marginal utility of X may be positive or negative (depending on the quantity of X and Y consumed) .
B) The marginal utility of X does not depend on the quantity of Y consumed.
C) The marginal utility of Y does not depend on the quantity of X consumed.
D) All of these statements are not true.