Joanna Is Deciding Between Consuming Good X and Good Y

Multiple Choice

Joanna is deciding between consuming Good X and Good Y.At her current level of consumption,her marginal utility per dollar for Good X is greater than the marginal utility per dollar for Good Y.To achieve the consumer optimum,Joanna needs to

A) consume more of Good Y until the marginal utility per dollar for Good Y is greater than the marginal utility for Good X.
B) consume more of Good X until the marginal utility per dollar for Good Y is greater than the marginal utility for Good X.
C) consume more of both Good X and Good Y until the marginal utility per dollar for Good Y is greater than the marginal utility for Good X.
D) consume more of Good X or less of Good Y until the marginal utility per dollar for Good X and Good Y is equal.
E) continue at her current level of consumption.