If negative integers k and p are NOT both even, which of the following must be odd?
Choose the correct choice from the following answers:
A) kp	B) 4(k + p)	C) k – p	D) k + 1 – p	E) 2(k + p) – 1
If negative integers k and p are NOT both even, which of the following must be odd?   (A) kp --&gt; can be even if either k or p is even.   (B) 4(k + p) --&gt; always even.   (C) k – p --&gt; can be even as well as odd. For example consider k-p=odd-odd=even and k-p=odd-even=odd.   (D) k + 1 – p --&gt; can be even as well as odd. For example consider, k+1-p=odd+odd-odd=odd and k+1-p=odd+odd-even=even.   (E) 2(k + p) – 1 --&gt; always odd, because: 2(k+p)-1=2*integer-odd=even-odd=odd.   Answer: 2(k + p) – 1.
<result>E</result>
If negative integers k and p are NOT both even, which of the following must be odd?