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