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# Odd and Even Integers 2

ACTMAT-N0ELXR

If $a$ is an even positive integer and $b$ is an odd positive integer, then the half of which of the following expressions will not be an integer?

A

$ab + ba$

B

$ab + a$

C

$ab + b + 1$

D

$ab + 2b$

E

$3ab + b$