Fence X is twice as long as fence Y, and fence Y is 1 feet shorter than fence Z. If 3 feet were added to each fence, which of the following must be true?
I) X is twice as long as Y.
II) Y is 1 feet shorter than Z.
III) X is longer than Z. Options:
A) I only  B) II only  C) III only  D) II and III  E) I and II
If X= 6   Y= 3   Z= 4   Then, after adding 3 feet to each:   X= 9   Y=6   Z=7   And the answer would be E, which is wrong.   II and III
<result>D</result>
Fence X is twice as long as fence Y, and fence Y is 1 feet shorter than fence Z. If 3 feet were added to each fence, which of the following must be true?
I) X is twice as long as Y.
II) Y is 1 feet shorter than Z.
III) X is longer than Z.