If x > y and y > z, which of the following represents the greatest number Q?	Choose one:
A) x − z
B) x − y
C) y − x
D) z − y
E) z − x
Because x&gt;y&gt;z   thus Q= x- z wil lbe greatest   x − zns: x − z
<result>A</result>
If x > y and y > z, which of the following represents the greatest number Q?