X, Y, W and Z are intezers and the expressing X - Y - Z is even and Y - W - Z is odd. If X is even then which of	Choose the correct option:
A) W must be odd  B) J must be odd  C) Y must be odd  D) Z must be odd  E) F must be odd
Ans. If X is even and X - Y - Z is even then Y and Z both should be odd or both should be even.   If Y - W - Z is odd, and Y and Z are also odd W should be odd   If Y - W - Z is even, and Y and Z are even then W should be odd.   W must be ODD   W must be oddnswer:W must be odd
<result>A</result>
X, Y, W and Z are intezers and the expressing X - Y - Z is even and Y - W - Z is odd. If X is even then which of