If (q-5)(y+2) = 0 which of the following must be true?  Choose the correct answer.
A) q = y  B) q > y  C) q < y  D) qy = -10  E) None of the above
From (q-5)(y+2) = 0 it follows that either q=5 or y=-2.   (A) q = y --&gt; not necessarily true. Consider q=5 and y=0.   (B) q &gt; y --&gt; not necessarily true. Consider q=5 and y=10.   (C) q &lt; y --&gt; not necessarily true. Consider q=5 and y=0.   (D) qy = -10 --&gt; not necessarily true. Consider q=5 and y=0.   Thus, none of the statements must be true.   Answer: None of the above.
<result>E</result>
If (q-5)(y+2) = 0 which of the following must be true?