Residents of city Y have more purchasing power than residents of cities X and Z. At the same income levels, residents of city Y spend less for food and housing and can therefore purchase more products.
Which of the following inferences is best supported by the statements made above ?

A. Residents of City Y have the ability to purchase food and pay for the housing considerably less than the residents of City X and Z because food and housing cost less.

B. Residents of City Y do not need to buy as much food and rent/build as big of houses as residents of cities X and Z.

C. City Y has lower sales taxes and cheaper land to build property on, compared to the cities X and Z.
D. Residents of city Y do purchase more products than residents of cities X and Z.
E. Residents of city U pay more for the other expenses compared to residents of X and Z.