ДНК S05E100 - Выпуск 659. Одна любовь двух братьев

The girl was having an affair with two brothers at once and now, 25 years later, her daughter still does not know her father. The mother herself admits that she most likely got pregnant from the youngest, but gave her daughter the patronymic of the elder. And the brothers' mother all these years does not recognize herself as a grandmother at all. So which of the men became a dad 25 years ago?