Which of the following statements must be true?

(A) Of the four stores, store X had the greatest percent increase in revenue from 2011 to 2012.
(B) Per customer, revenue increased at store Z from 2011 to 2012.
(C) Of the four stores, store W had the greatest increase in total costs from 2011 to 2012.
(D) Of the four stores, store Y had the highest percentage of repeat customers.
(E) In 2012, store W and store Z combined had fewer distinct customers than did store X.