The logic here is
28 - 15 = 13
30 - 17 = 13
41 - 28 = 13
43 - 26 = 17
In all number pairs except 26 - 43, the difference between the second number and first number is 13.
$$\therefore\ $$26 - 43 is the odd number pair among the given number pairs.
Hence, the correct answer is Option D
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