Find the odd number / letters / word from the given alternative:

The answer is D. 5061.

In each of the other options, the sum of the first two digits is equal to the third digit. For example, in 7202, 7 + 2 = 9. In 4025, 4 + 0 = 4. In 6023, 6 + 0 = 6. However, in 5061, 5 + 0 = 5, but 6 is not equal to 1.