If x is the median, y is the mean, and z is the mode of a certain data-set consisting of 11 positive integers, and x < y < z, which of the following must be true?
(A) y is the arithmetic mean (average) of x and z
(B) There are more integers that are less than x than that are greater than x.
(C) z is the greatest value among the data.
(D) If 2 integers of the lowest value are removed, the value of z will change.
(E) The sum of all the integers is 11y.