If x, y, and z are negative integers and 3x - 3y = -3z, then which of the following statements must be true?
I.	x = z
II.	x > y > z
III. x > y	Choose the correct choice from the following options:
A) I and II	B) I only	C) II only	D) III only	E) None
3x-3y=-3z   x-y=-z   Since z&lt;0; -z&gt;0   x-y&gt;0   x&gt;y   III correct.   We can't say much about z though;   x=-5; y=-100; z=-95   II and I incorrect.   Ans:III only
<result>D</result>
If x, y, and z are negative integers and 3x - 3y = -3z, then which of the following statements must be true?
I.	x = z
II.	x > y > z
III. x > y