Fence X is twice as long as fence Y, and fence Y is 2 feet shorter than fence Z. If 2 feet were added to each fence, which of the following must be true?
I) X is twice as long as Y.
II) Y is 2 feet shorter than Z.
III) X is longer than Z.  Choose the correct choice from the following options.
A) I only	B) II only	C) II and III	D) I and II	E) III only
If X= 6   Y= 3   Z= 5   Then, after adding 3 feet to each:   X= 8   Y=5   Z=7   And the answer would be II and III, which is wrong.
<result>C</result>
Fence X is twice as long as fence Y, and fence Y is 2 feet shorter than fence Z. If 2 feet were added to each fence, which of the following must be true?
I) X is twice as long as Y.
II) Y is 2 feet shorter than Z.
III) X is longer than Z.