If e + xy = e and x is not equal to 0, which of the following must be true?  Choose the correct option
A) x<y  B) x+y=0  C) x=e  D) x=0  E) y=0
e + xy = e --&gt; xy=0. Since x is not equal to 0, thus y = 0.   Answer: y=0.
<result>E</result>
If e + xy = e and x is not equal to 0, which of the following must be true?