If a and b are odd integers, which of the following is an even integer? Options:	A) 2ab+a	B) 2ab-b	C) 2ab+a+b	D) 2ab+2a+b	E) 2ab+2a+3b
2ab+a+b=even+odd+odd=even   The answer is 2ab+a+b.
<result>C</result>
If a and b are odd integers, which of the following is an even integer?