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Which of the folloiwng nuclear fragments corresponding to nuclear fission between neutron ( ) n 1 0 and uranium isotope ( ) U 235 92 is correct :

1. n 4 Kr Ba 1 0 89 36 144 56 + +
2. n 3 Sr Xe 1 0 94 38 140 56 + +
3. n 3 Nb Sb 1 0 99 41 153 51 + +
4. n 3 Kr Ba 1 0 89 36 144 56 + +

Correct answer: n 3 Kr Ba 1 0 89 36 144 56 + +

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