Three positive numbers x, y, and zhave the following relationships y = ... ...

Three positive numbers x, y, and z have the following relationships y = x + 2 and z = y + 2.  When the median of x, y, and z is subtracted from the product of the smallest number and the median, the result is 0.  What is the value of the largest number?
(A)   –2
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Press: Set V - Probability & Statistics