If q and r are even integers, which of the following is an odd integer?	Choose the correct choice:
A) qr + 2	B) q(r − 1)	C) q(q + 5)	D) 3q + 4r	E) (q + 3)(r − 1)
If q and r are even integers, then:   A. qr + 2: even + even = even   B. q(r − 1): even(odd) = even   C. q(q + 5): even(odd) = even   D. 3q + 4r: even + even = even   E. (q + 3)(r − 1): (odd)(odd) = odd.   Answer is (q + 3)(r − 1).
<result>E</result>
If q and r are even integers, which of the following is an odd integer?