Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.

4327 : 2003

The logic followed here is :

Ist number - 1234 = second number

5237 : 4003 = 5237 -1234 = 4003

4327 : 2003 = 4327 -1234 = 3093 but 2003 is given (ODD)

3527 : 2293 = 3527 - 1234 = 2293

2347 : 1113 = 2347-1234 = 1113