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