Suppose the price of Good X is $4 and the price of Good Y is $3. If a consumer has a Marginal Rate of Substitution (MRSxy) of 1 for the bundle they are considering, then given their budget constraint, the consumer
a. Cannot reach a higher level of utility given their budget constraint.
b. Would have a higher utility if they bought more of Good X.
c. Would have a higher utility if they bought less of Good X